After player died redstone clock, redstone loop and command block loop stop. 

picture 1: look like normal but it's actually stopped.

picture 2: in sidebar you can see death score is 1 but the command is stopped and didn't set my score back to 0.

What I expected to happen was...:
Redstone clock will run normally.

What actually happened was...:
It stuck until you destroy one of redstone or the repeater.

Steps to Reproduce:
1. Build easy redstone clock(as attachment picture) or command (/execute if entity @p[scores=

] run scoreboard players reset @p death) if scoreboard death is deathCount criteria. And run command for few times in repeat command block. (first time it'll work normally)
2. Command /kill @a or being kill in anyways (tested with zombie)