How to handle lane out of pools

[lordcenzin]

Hi all,
I'm very disappointed because of the "fragility" of the explorer application.
I'm too often experiencing a very strange issue: some times while adding tasks, gateways etc. the lane "moves out" of the pool. This implies that I cannot reset it in the proper place.
It is not possible to mechanically reproduce, but happens quite often.
Do you know how that can be possible? How can I recover a normal situation without redrawing it from scratch?
Undos do not recover!

Could you please give me any suggestion except manually saving more often?

Thanks

[lordcenzin]

dear all,
it happened again. It is really frustrating, because I cannot proceed in any ways except exit without saving.
Now happened after very few changes, but it also happened after more than 20 tasks and several conditions etc.
Can you let me know what is happening and how to handle?
I attached the bpmn obtained after saving the process and i linked also the image of the alfresco explorer application.

Hopefully it is more detailed description.

Question: is there maybe a browser that has been considered more "compatible" than others? I'm using Firefox 42 (last at the moment) on windows 7. I'll try with chrome too.

what I see on activiti explorer is here:
http://i.imgsafe.org/3e34e28.png

Thanks in advance

[lordcenzin]

…and with Chrome
http://postimg.org/image/otgr0mold/

I noticed that everytime I click on any BPMN element in the Pool, it is ALWAYS slightly moved. When I click on the lane, i.e. to resize it, it "often" goes "out-of-the-pool" and then I have to close and continue from the last save.

Any feedback?