With Chests Anywhere 1.12-beta, navigating between chests causes Categorize Chests' overlay to disappear until you add/remove a chest item (see log). This doesn't happen with Chests Anywhere 1.11.1.

Reported by SpringsSong on Discord.

The Categorise Chests author is inactive, so I decompiled the mod to peek. This happens because of changes to support the shipping bin and Junimo huts. Specifically, Categorise Chests has this code:

Chest chest = itemGrabMenu.behaviorOnItemGrab?.Target as Chest;

That Target property is the instance on which the delegate is called, which is now IContainer for menus opened by Chests Anywhere.

Fixed in develop for the upcoming Chests Anywhere 1.12 release.

Categorize Chests doesn't seem to be open-source, so it's difficult to investigate. I'll leave it as-is until the author can take a look.