When I tried to build a Jump'n'Run parcour I found out that a combination of a command block, a pressure plate and a comperator doesn't activate a command block sometimes. At first the command block worked the right way (it gave me jump boost) but after a while the comperator stopped acitvating. The command in the first block was like that:
/testfor @p[x=-28,y=205,z=66,r=1,score_parcour_min=1]
The parcour-score checks if the player has already started the parcour-challenge. (First picture)
A simular problem appeared when I tried this and combined three command blocks like this:
1.) /testforblock 41 222 35 minecraft:light_weighted_pressure_plate 1
2.) testfor @p[x=41,y=223,z=35,r=2,score_check=2]
3.) /scoreboard players set @p[x=41,y=223,z=35,r=2] check 3
But like the first one the comperator stopped updating after the first run. (Second picture)
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.