GNS3 Crashes and does not open again

[TayYuanGeng]

Was doing my emulation half way and it suddenly closes. The virtual machine running on vmware however is still running. Tried reopening GNS3 and all I saw was:

Tried clicking on it several times but it doesn't show the topology or the landing page that I am supposed to see.
Rebooted my computer and tried again but it doesn't work. It does activate the virtual machine connected to gns3 but the landing page is no longer visible

[TayYuanGeng]

Nvm, idk was it a bug but what I did was to right click on the white screen on the first picture and 'maximise' kaboom, it comes back up again. And also I remember clearly that I did nothing but just clicking on a VPC to delete it before it happens.

[grossmj]

I suspect there is a bug when deleting one or more nodes. We will need to investigate this...

[PranavBhattarai]

In Ubuntu 19.10 with VM Workstation 15 Pro; I have experienced this hang up multiple times.

4 out of 10 times, there is only one while underscore waiting for GNS3 to show its menus.

At last, I have no other option let but to shutdown using VMware option; which I think is what we call force shutdown. @grossmj Do you have anything to say about these glitches? Or is it happening to me only?