/execute @e[type=armor_stand,name=(anything)] ~ ~ ~ /replaceitem @p[r=0] slot.weapon.offhand 1 shield 1 causes crash when put in a repeating command block and when you get near the executing armor stand. This command may not be exact and crashes may happen with other commands but this is what I experienced.
MCPE-43823
Shelds cause crash (Nintendo Switch)
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue at MCPE-39589, so we will resolve and link this ticket as a duplicate.
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