MC-169839Certain potion effects that override lower level effects don't get removed after their duration ends
All potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
This issue is due to the implemented fix for MC-1541.
To reproduce:
1. Run:
/effect give @s speed 100000 1 true
2. Run:
/effect give @s speed 1 100 true
3. Open your inventory to check that the higher level potion has run out. Notice now that after it runs out, you still have high FOV and your speed is still level 100 when you physically move despite the effect no longer being present.
4. Run the following command, and notice that your Attributes still indicate you have speed of level 100.
/data get entity @s Attributes[{Name:"generic.movementSpeed"}]
Created Issue:
Certain potion effects that override lower level effects don't disappear after their duration ends
All potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
To reproduce:
1. Run: /effect give @s speed 100000 0 true 2. Run: /effect give @s speed 1 100 true
/effect give @s speed 100000 0 true2. Run:
/effect give @s speed 1 100 true 2. Run: /effect give @s speed 1 100 true
All potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
To reproduce:
1. Run: /effect give @s speed 100000 0 true 2. Run: /effect give @s speed 1 100 true
/effect give @s speed 100000 0 true2. Run:
/effect give @s speed 1 100 true2. Run: /effect give @s speed 1 100trueAll potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
To reproduce:
1. Run:
/effect give @s speed 100000 0 true2. Run:
/effect give @s speed 1 100 true3. Open your inventory to check that the higher level potion has run out. Notice now that after it runs out, you still have high FOV and your speed is still level 100 when you physically move despite the effect no longer being present.
4. Run the following command, and notice that your Attributes still indicate you have speed of level 100.
/data get entity @s Attributes[{Name:"generic.movementSpeed"}]
Certain potion effects that override lower level effects don'tdisappearafter their duration endsCertain potion effects that override lower level effects don't get removed after their duration ends
All potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
This issue is due to the implemented fix for
MC-1541.To reproduce:
1. Run:
/effect give @s speed 100000 0 true2. Run:
/effect give @s speed 1 100 true3. Open your inventory to check that the higher level potion has run out. Notice now that after it runs out, you still have high FOV and your speed is still level 100 when you physically move despite the effect no longer being present.
4. Run the following command, and notice that your Attributes still indicate you have speed of level 100.
/data get entity @s Attributes[{Name:"generic.movementSpeed"}]
All potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
This issue is due to the implemented fix for
MC-1541.To reproduce:
1. Run:
/effect give @s speed 1000000true2. Run:
/effect give @s speed 1 100 true3. Open your inventory to check that the higher level potion has run out. Notice now that after it runs out, you still have high FOV and your speed is still level 100 when you physically move despite the effect no longer being present.
4. Run the following command, and notice that your Attributes still indicate you have speed of level 100.
/data get entity @s Attributes[{Name:"generic.movementSpeed"}]All potion effects that modify attributes are affected by this bug. This should include speed, slowness, strength, weakness, haste (partially), mining fatigue (also partially), luck, unluck, and health boost. If the player currently has a lower level of a potion effect, and receives a potion effect that is higher leveled but runs out before the last potion, the effect will not disappear and will instead continue until the original effect's duration has run out.
This issue is due to the implemented fix for
MC-1541.To reproduce:
1. Run:
/effect give @s speed 100000 1 true2. Run:
/effect give @s speed 1 100 true3. Open your inventory to check that the higher level potion has run out. Notice now that after it runs out, you still have high FOV and your speed is still level 100 when you physically move despite the effect no longer being present.
4. Run the following command, and notice that your Attributes still indicate you have speed of level 100.
/data get entity @s Attributes[{Name:"generic.movementSpeed"}]
![[Mojang] Bartosz Bok](../../../data/avatars/users/10122.svg){kind=small}
[Mojang] Bartosz Bok![[Bot] Piston](../../../data/avatars/users/31202.png){kind=small}
If you stand within range of a beacon with a Level 2 effect, then drink the same potion type with a Level 1 effect, then leave the region, your longer lasting Level 1 effect gets removed along with the Level 2 effect.
This also happens if you drink a potion of speed 2 and then drink a longer lasting potion of speed 1.
This happens because the lower level effect is not tracked - only the highest new level effect is stored. The HiddenEffect nbt tag only updates when the new effect is higher than the current effect, thus fails when the opposite happens.
To reproduce:
1. Create a beacon with level 2 speed. Alternatively, drink a potion of level 2 speed. Alternatively, run:
/effect give @s speed 5 1 true
2. Drink a Level 1 potion of swiftness with longer duration. All this will do is update the current effect by making particles show and the potion icon show up in the HUD, but nothing else is modified including the duration of the current effect.
3. After the first effect runs out within 5 seconds, you no longer have any swiftness, thus you lost the effect of the potion you drank.
This issue relates to MC-169839.
![[Helper] pine1needle](../../../data/avatars/users/41329.png){kind=small}
The Bug
If you have 3 or more levels of the same potion effect applied at the same time, when the duration of the highest level runs out, a lower level will be remembered - but when the duration of that lower level runs out, it will not remember the levels below it.
To Reproduce
Run the following commands very quickly one after the next. (Using a chain of command blocks helps to run them quickly.)
/effect give @p jump_boost 20 /effect give @p jump_boost 15 1 /effect give @p jump_boost 10 2 /effect give @p jump_boost 5 3
Open your inventory and watch the duration count down. When “Jump Boost IV” runs out, there will be 5 seconds of “Jump Boost III” left - but when “Jump Boost III” runs out, it doesn’t give you “Jump Boost II”.
Additional Notes
![[Mod] EVGENSYPERPRO](../../../data/avatars/users/92853.png){kind=small}
Repost of MC-1541 for bedrock.
When a stronger effect overwrites a weaker effect the weaker effect is gone forever even if the weaker effect had a higher duration than the stronger effect. This was fixed in java edition in 1.15.2, by making the weaker effect come back after the stronger effect expires, but hasn’t been fixed on bedrock edtition yet.
How to reproduce:
1. Run this command: effect @s regeneration 99999999 0 true
2. Run this command: effect @s regeneration 2 1 true or throw a splash potion of regeneration 2 at you.
What I observed: After the stronger effect expires the weaker effect doesn’t come back, it is completely deleted.
What I expected: After the stronger effect runs out the weaker effect will come back (If the weaker effect is longer than the stronger effect).
In survival this can often happen when a beacon overwrites the effect. This can cause you to lose 8 minutes of an effect if you enter a beacon area. Or if you use a totem of undying, the fire resistance 2 effect (See MCPE-52364) was able to cause you to lose the fire resistance effects from a potion.
When this got fixed on java edition there also were some bugs that related to it MC-169930 MC-169839 MC-169840 MC-169965. MC-169964 is also currently a bug in java edition. Hopefully they are not in the game when it gets fixed on bedrock edition.
Can confirm. You can also reproduce this in survival by using the original repro steps of
MC-1541. It appears as if the effect amplifier decreased, but you still have the same attributes.