Does not work with jQuery >= 1.8

Nor anything newer it seems. (I tried 1.8 and 1.9). Reverting to 1.5 worked for me, but that's not an option. I'll see if I can find out how to get it to work with newer versions of jQuery too. If anyone has a quick solution, feel free to post it.

I don't know what your problem was, but I had a console error

$text.outerHeight is not a function

What I did to fix it was to assign $text to the JQuery selector first, and only after that modify it with the original "append" and "css" functions, because I saw it was an empty object when issuing the error:

var $text = $('<div class="bt-content"></div>');
$text.append(content).css({
       padding: opts.padding,
       position: 'absolute',
       width: (opts.shrinkToFit ? 'auto' : opts.width),
       zIndex: opts.textzIndex,
       left: shadowShiftX,
       top: shadowShiftY
}).css(opts.cssStyles);

I am using JQuery 2.1.4 and the tooltips are so far working ok.

Thank you Jorgee (#3),

it seems you have a solution for my everlasting problem.

Unfortunately I have no idea where to put this snippet. I didn't find anything similar to that in the module.

Can you help me?

Edit: OK, well, ehm, I found it. In Beautytips. I only searched in Calendar Tooltips. :-)

Had to add
jQuery.curCSS = jQuery.css;
to make it work with jquery 1.8

I created a patch based on #3 for the beautytips module: https://www.drupal.org/node/2617148#comment-10576808

When using the "jQuery Update" module, the highest possible Default jQuery Version selection is "1.7" for me. Selecting "1.8" or higher would cause the tooltip to no longer appear.

Does it effect other functions if we reduce the version of jQuery from 1.8 to 1.7 in module configuration? using D7

I am closing this support request, as it has been answered from comment #6.