I'm also encountering the same issue, I made a multiplayer map using lots of repeating command blocks in 1.13.2, but when I switched to test out in 1.14+, all commands were still valid (I have checked every one of them), but some repeating command blocks even though they were powered on, the commands were never executed until I turned the power off and back on.
YoshinoBHL
I'm also encountering the same issue, I made a multiplayer map using lots of repeating command blocks in 1.13.2, but when I switched to test out in 1.14+, all commands were still valid (I have checked every one of them), but some repeating command blocks even though they were powered on, the commands were never executed until I turned the power off and back on.