Blockly - can't find/pick some items

I have no idea if it’s fixed in 4.2 but the Item picker is the generic one used everywhere in MainUI, right? There was an Issue and PR that changed something like the problem reported here. So it’s probably fixed in 4.2 but I’m not running 4.2 and even if I were I don’t have any items that are not showing up so probably couldn’t great it anyway.