If i recall correctly, this has been broken since 26.1ish. When selecting any command block and updating the Hover Note text that displays above it, if text was already there beforehand—it will not update until the command block is replaced or if you reload the world.
I’ve had two of my friends try this in their own world to see if it was just a me problem, but all of the text doesn’t update correctly for them either. Incredibly frustrating for map makers like myself.
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