The Bug
When a comparator is facing away from a chest with something in it, and you right-click the comparator to make the third redstone torch deactivate, the back two torches will blink off sometimes. Also, the comparator will switch to the unpowered state, as can be seen be using f3.
Steps to Reproduce
Place down a chest and some items inside of it.
Place down a comparator beside the chest so that it receives a redstone signal from it.
Switch the mode of the comparator constantly by right-clicking it.
Take note as to whether or not powered comparators momentarily become depowered when switching their mode.
Observed Behavior
Powered comparators momentarily become depowered when switching their mode.
Expected Behavior
Powered comparators would not momentarily become depowered when switching their mode.
Related issues
is duplicated by
Attachments
Comments


Confirmed.
The comparator not only blinks with the back torches, it switches also short to the off state.

Confirmed up to 1.6-pre, also happens with hoppers

Confirmed for 1.6.1 !

Confirmed for 1.6.2 !

Confirmed for 13w36a/b !

Confirmed for 13w37a !

Confirmed for 1.6.3-pre and 13w37b !

Confirmed for 1.6.4 and 13w38a !

Confirmed for 13w38b/c !

Confirmed for 13w39a/b !

Confirmed for 13w41a/b !

Confirmed for 13w42a/b !

Confirmed ofr 13w43a !

Confirmed for 1.7

Confirmed for 1.7.1

Confirmed for 1.7.2

Confirmed for 13w47a/b/c/d/e !

Confirmed for 13w48a/b

Confirmed for 13w49a

Confirmed for 1.7.3 and 1.7.4

Confirmed for 14w02a/b

Confirmed for 14w04a

Still happens in 14w06a/b

Confirmed for 14w07a

Confirmed for 14w17a

Reopened, thanks

Confirmed for 1.8.1-pre3

Confirmed for 1.8.4

Confirmed for 15w32c

Is this still an issue in the most recent versions (currently that is 1.10.2, or 16w42a) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time.
Can confirm for 1.12
Can confirm for 17w43a/b
Can confirm for 17w47b

@unknown: ticket is yours now.

Confirmed for 1.14.3 Pre-Release 1

Confirmed for 1.14.3 Pre-Release 2

Confirmed in 1.15.2 and 20w21a.
Can confirm that this issue is still present in 20w51a.
Can confirm in 21w03a.
Can confirm in 21w05b.
Can confirm in 21w06a.
Can confirm in 21w07a. Video attached.
Can confirm in 1.16.5 and 21w08b.
Can confirm in 21w15a.
Can confirm in 21w17a.
Can confirm in 1.17.
Can confirm this in 21w44a. Here are some extra details regarding this problem.
The Bug:
Powered comparators momentarily become depowered when switching their mode.
Steps to Reproduce:
Place down a chest and some items inside of it.
Place down a comparator beside the chest so that it receives a redstone signal from it.
Switch the mode of the comparator constantly by right-clicking it.
Take note as to whether or not powered comparators momentarily become depowered when switching their mode.
Observed Behavior:
Powered comparators momentarily become depowered when switching their mode.
Expected Behavior:
Powered comparators would not momentarily become depowered when switching their mode.
Can confirm in 1.18.2 and 22w19a.
Can confirm in 1.19. The issue here is that comparators that receive power from containers with items in them sometimes change their "powered" block state momentarily when altering their mode.
Can confirm in 1.19.2.