Ubuntu – Activites overview stops the whole system


First look at the images to understand what happens

(if anybody can tell me how to upload a video here than it will be much better)

enter image description here

enter image description here

enter image description here

So the story is like this I clicked on the group then click outside the group to close it and then the system got stop.

Now what happens when it stops? :- I can use mouse but mouse clicks doesn't works also keyboard doesn't work.

So ultimately I have to force shutdown my laptop.

How often does this happen? :- rare, for example I did this procedure for 3 minutes then the system got stuck.

this is rare I got this many times till now. I don't want this to be happen when I have unsaved work.

Related Question