I have found this older topic:
When I create a new activity and would like to write a text inside it
e.g. login to the system. I cannot change the size of that text box.
Cannot chage to make its alignment right or left. Any suggestions?
It is not possible to resize text box of the task. Instead of
resizing the text box you are always able to resize the task, so that
the text does fit into the text box.
I don’t think this (“resize the text box”) applies anymore, because on my Camuynda Modeler v0.34.3, running on Ubuntu 14.04, I get something like this:
Basically, when I edit text inside the Task box (shown on left), I do get a handle on the bottom right corner, which I can drag, and which apparently changes the size of the text box (not of the task box, whose borders are still somewhat visible in the back - and btw, this is in complete opposition of the advice given in the post at the link given above).
But then, when I press Enter so changes are accepted, and the Task box is redrawn in full (shown on right), I can see that the change of the text box size did not influence at all the size of the task box; and furthermore, there are not any handles that I could use for dragging to resize the task box - nor can I see any other method to resize the Task box.
So, is it possible to resize the Task box in Camunda - and if so, how?