Running Ubuntu Studio, both the repository version as well as current git make denemo almost useless with a flood of tool tips. There doesn't seem to be any delay before they pop up, they don't go away unless explicitly closed, and I'm even getting some popups for things that don't look like they should be tooltips - like "Mouse Press Left. This moved the cursor to the object position clicked. The cursor height becomes the clicked point." (Perhaps I'm missing something but I wouldn't think that would need a tool tip.) I found an email thread from September, but it looks like that had to do with tool tip delay. That would simply be annoying - these won't go away without action - an action likely to create 3 or 4 more popups.
Nathan