I recently noticed that I can't copy-paste text into an anvil anymore. Without itemscroller, it's working fine. Is this a config issue or something else?

(itemscroller-fabric-1.16.4-0.15.0-dev.20210111.205029)

I can't reproduce that, I can still paste normally in the Anvil GUI.
What other mods do you have?

Strange.. This is my mod list:

When I remove itemscroller, it's working fine. Must be an incompatibility with another mod then.

I guess first try if it still is an issue if you remove Appleskin, Fast Chest, g4mespeed, Shulker Box Tooltip.
Also I guess before that, have you changed any of the hotkeys, maybe something bound to V in Item Scroller, with the Cancel Further Processing enabled?

"Also I guess before that, have you changed any of the hotkeys, maybe something bound to V in Item Scroller, with the Cancel Further Processing enabled?"

That was it! Thanks for the help, and sorry for the hassle.