Wow I found something niche, here on Mac silicon (M2), 2025.31550
When I place an operator by dragging a connection and switching family (POP to DAT, TOP to CHOP) it writes the name of the operator as it should in the OP parameter field, but missing the first letter of the operator, resulting in it not working. Writing the missing letter enables the OP to find what it was supposed to find.
Are you able to reproduce the bug in a new project? So far, I’ve only been able to replicate the issue using the file you shared. Just to confirm - was that file originally created with version 2025.31550?
thanks for reporting this. Turns out this is happening when you are referencing operators in the root of TouchDesigner (/) and is a bug in the OP Create Dialog.