I must test with a simple survey : but we have surely some "BD save" issue when do the survey.

What action is this? /index.php/admin/database/index

Fix committed to 2.5 branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16482

1st : button appear at : index.php/admin/questions/sa/view/surveyid/282267/gid/8/qid/35
2nd click on button
/index.php/admin/questions/sa/newquestion/surveyid/282267/gid/8 : must be disable
3rd : send $_POST to /index.php/admin/database/index with : action=insertquestion work actually : this must controlled too.

Easy way : Add a control here : if ($oSurvey->active=="Y") ....
Better way (i think) : in model.

Using if($this->isNewRecord) in a new extended function : beforeSave : http://www.yiiframework.com/doc/api/1.1/CActiveRecord#beforeSave-detail or in rules (don't know the best)

This must return false and

Fix committed to 2.5 branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16484

3rd : send $_POST to /index.php/admin/database/index with : action=insertquestion work actually : this must controlled too.

I cannot reproduce this. What $_POST did you send?

Added check in controller and disabled button in view.

I looking at code for $_POST. I didn't say it can be done actually without hacking the HTML view by user (any user can update his HTML to send any value to any inout name).
But always better if we stop Broken behaviour at model.

The Survey quick action button is still here (and clickable). Return alert is OK :)

Fix committed to 2.5 branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16617

@Denis, what quick action button exactly? Screenshot?

@Denis, did you pull before re-open?

Fix committed to 2.5 branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16623

Olle : i can confirm the issue, maybe assets ?

Just now:
$ git reset --hard
$ git pull

Goes to an active survey by 'Question group/question explorer' : see the button. Reload the page (maybe some JS) : button still here.

Click on it : go to index.php/admin/questions/sa/view/surveyid/282267/gid/9/qid/42 with " Cannot add questions while the survey is active. " alert.

HTML code of "button" :
<div aria-data-url="/index.php/admin/questions/sa/newquestion/surveyid/282267/gid/9" id="pannel-1" class="panel panel-primary panel-clickable" style="opacity: 1; top: 0px;">
<div class="panel-heading">
<h4 class="panel-title">Ajouter une nouvelle question au groupe</h4>
</div>
<div class="panel-body">
<a href="/index.php/admin/questions/sa/newquestion/surveyid/282267/gid/9">
<span style="font-size: 3em;" class="icon-add text-success"></span>
</a>

<a href="/index.php/admin/questions/sa/newquestion/surveyid/282267/gid/9">
Ajouter une nouvelle question au groupe </a>

PS: this panel must NOT exist.

Fix committed to 2.5 branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16630

Fix committed to 2.5 branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=16632

Version 2.5RC6 released