Hello all, i am currently experiencing a bug in minecraft 1.15.2 on my server. On my server there are a lot of repeating (always active) command blocks. now heres the issue: certain command blocks dont work and others only work on specific people even though the commands are @a.

Here is one of the commands that dont work at all:
/execute as @a[nbt={Inventory:[{Slot:103b,id:"minecraft:skeleton_skull",tag:{display:{Name:"

{\"text\":\"Skeletal helmet\",\"color\":\"dark_gray\",\"italic\":\"false\",\"bold\":\"true\"}

"}}}]}] run effect give @s minecraft:night_vision 30 1 true

There are a few more like this one in the spawn chunk for fun items to earn and play around with.

Here is a command that only works on 1 specific player, although multiple players are wearing the armorpiece:

/execute as @a[nbt={Inventory:[{Slot:100b,id:"minecraft:golden_boots",tag:{display:{Name:"

{\"text\":\"Holy Jumpers\",\"color\":\"gold\",\"italic\":\"false\",\"bold\":\"true\"}

"}}}]}] run effect give @s jump_boost 1 1 true

All items owned by players are named correctly of course.

Furthermore there are no plugins or mods on this server. Vanilla 1.15.2

I honestly dont know if you can replicate this bug, but i sure hope that there is a fix.