Can you upload a lss file please ?

Did you test with default template ? Because hide tip use CSS now.

Other question types are also affected (e.g. numeric data). Also with default template.

Please raise severity level, or supply a workaround... Thx!

A workaround may be to put:
div.emtip { display: none; }
at the bottom of template.css .
But then question tips will never be shown and you'll have to update all your templates.....

You're right .... we have hide-tip class in HTML but not in template.css of default actually.

You can use:
div.hide-tip { display: none; }

template.css use span.hide-tip ....

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16257

And for remind:

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

https://github.com/LimeSurvey/LimeSurvey/blob/master/docs/license.txt

So now everybody has to change their templates (if they want to use hide-tip = Yes)? Hmmm....

Before : a div inside a span : break HTML.