Culprit code:

Specifies how long time the tooltip will be displayed, in milliseconds. If the value is -1 (default) the duration is calculated depending on the length of the tooltip.

That over a minute in Mu2 was clearly a bug, fixed there and is still needed.

If changing that to 10 seconds is desired, you can assign the issue to me.

I can't reproduce that toolTop showing when hovering over "Show on first page". It does show when hovering over "Header" and "Footer" though. The only way to prevent that would be to attach the toolTip to the 12 input fields instead of the 2 sections. Not sure that'd be something to do.

I would suggest not limiting the display time of the tooltip for these fields at all, because the text there is very long and it seems to me that 10 seconds will not be enough for the user to read

if we can't no limit the display time then two minutes looks good to me.

I disagree: that huge toolTip covers large parts of the screen and also those where you try to input stuff.

Would be different if it were a 'normal' dialog window you could grab and move aside. But it isn't ...

Any you can re-display it any time, for another 10 seconds ;-)

IMO, the real solution is not making it a tooltip at all, but simply an always-visible text area at the bottom of the dialog. We could make it expandable/collapsible, but I don't even think that's necessary, because it won't get in the way in any way.
(Of course, this would require that we make that page scrollable, but I think it already is.)