The top right box "/effect @p minecraft:regeneration 30 1 false" it doesn't seem typing, but the "/effect @p minecraft:regeneration 30 1 true" write in all of them and it looks like when it's supposed to look.
MC-95988
Effect Box Problem
Resolved
Works As Intended
0
It is difficult to understand what you're saying.
By setting "hide particles" to true, the top-right effect indicator for that effect will not appear (which is a feature for map makers).