Java on local PC:
java version "1.8.0_381"
Java(TM) SE Runtime Environment (build 1.8.0_381-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.381-b09, mixed mode)

Java on Server:
openjdk version "1.8.0_422"
OpenJDK Runtime Environment (build 1.8.0_422-8u422-b05-1~22.04-b05)
OpenJDK 64-Bit Server VM (build 25.422-b05, mixed mode)

Affected mods:
HadEnoughItems_1.12.2-4.26.0.jar
thaumictinkerer-1.12.2-5.7.1-Unofficial.jar

Issue appears only in MP / not reproducible in SP
Issue appears also in fresh and clean world on MP

While wearing the "Leggings of the Burning Mantle", the statuseffect "Fire Resistance" is active permanently - tho "flickering".
Appears that on every "flicker", the marked text in JEI/HEI searchbox is being unselected.

short video #1

xJon/The-1.12.2-Pack#983

Can reproduce as well (with the Leggings of the Burning Mantle). I wonder whether it can be fixed from Had Enough Items' end?

may fixed, if actually fixed, pls close this issue

@KELETU66666 Looks to be resolved with the latest mod update!