Strange behavior when resizing a ConditionalNode in an activity diagram.

[PeterHeintz]

I have a ConditionalNode in an activity diagram with some Clauses.

As long as no actions are in that node I can resize the node in the diagram by dragging as I expect.

However after adding some actions in, my resizing gets out of control and  the node get each time I try to resize it longer and longer (vertically).
Do I just miss to press some magic key when resizing or is that a bug?
I remember, I had similar problems with sequence diagrams where I found a magic key some time ago in V11.
Now I am using V12.

[PeterHeintz]

Due to the silence with this issue I assume this is just a bug and I will post it to Sparx.

[Tsukuru Tazaki]

Hello, have you managed to resolved the issue somehow? What did you do to repair the master?