I have already mentioned, probably to the annoyment of the developers, at least I wouldn’t be surprised… that window management acts weird on linux in fullscreen (in regards to scripting terminal, but also other, e.g. scripted non-modal dialogs)
I have learned that this is a linux issue not easily solvable for renoise.
Does the same count for some objects/buttons in the far left that do not behave normally under fullscreen? In this case I have found that also the leftmost instrument/sample envelope point is unreachable by mouse when this envelope is expanded in full view (non-windowed iycmd).