@galads, can you reproduce this one?

@Mazi I don't get it (equation for subquestions), can you please provide screenshot where do you set this? And screenshot of the bug please?

@tibor.pacalat, please see attached screenshots from 1 to 4 showing the issue.
1 = Loading question
2 = Clicking into equation field which enlarges the field
3 = Equation entered
4 = Further editing: If you click into the equation field again e.g. to fix a typo, the field shrinks again making it difficult to edit anything.

1.png (5,926 bytes)   

1.png (5,926 bytes)   

2.png (6,062 bytes)   

2.png (6,062 bytes)   

3.png (7,704 bytes)   

3.png (7,704 bytes)   

https://github.com/LimeSurvey/LimeSurvey/pull/4368

@gabrielJenik After I save the question, I can not trigger the expanding again.

To reproduce:

1. Switch to your branch with the fix
2. Enter relevance equation in MC subquestion and save the question
3. Click into the field again - doesn't expand any more

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=39006