heyho,
i somehow fixed it myself - but if someone knwos why the following fixed it, i'd appreciate any help:
line 45 of jquery.dropdown.js:
if (relative.get(0) !== document.body)<br />
/* edited, cause relative.scrollTop() sometimes was "to big" => error in "manage collaborators-popup" */<br />
/*offset.top -= relative.scrollTop()*/;
somehow the relativ.scrolltop() was way to high on the browsers with the error (not on edge)<br />
relative = trigger.offsetParent(),
while "trigger" the button to "manage collaborators" is (the one with THIS title popup and the group-icon on it.
i have no idea if this change causes other errors, since it doesnt seem to be a "bug" itself... i just cant find what caused this.
maybe some html entities in the thread - i donno...
just for you to understand the problem better:
somehow the "relative.scrollTop()" value got enourmous high.
funny, it doesnt happen on a few other tickets :(<br />
AND: the tooltip popup "manage collaborators" appears on the right position though
Hmmm I'm sorry, I don't really have anything to add. Except that I'm glad you sorted this out.
To be entirely honest, I don't quite understand what the root of the issue was. But I'm going to keep this in mind in case anyone reports something similar.
Thank you for taking the time to post your solution.