There is no particular location where it doesn't work, It doesn't work in general in Octane plugin for Unity. For example if I accidentally delete any node, I can't undo this action. It is not even active (see attachments) I'd appreciate if you could double-check things here.
Yes, exactly. As we're talking about Octane, I meant any action in Octane UI - delete node, make any adjustments to the materials inside Octane plugin, literally anything that is done through Octane's UI. Does it make more sense now? Here's the missed image https://imgur.com/S2zaZ3Y