Screencloud stopped working properly on multiple screens

I have been using Screencloud for years as the main screenshot and snapping tool on Ubuntu. It has worked fine until I have update to Ubuntu 17.10.

Now, it started “switch desktops” when I try to Capture Selection. In details, I have 3 monitors (left, middle, right) where Activities and top bar is on the right one. When I try to capture selection, the app works only on the left screen. On the middle screen, the right screen desktop appearas when I want to capture selection. And on the right screen, I get blank or black screen. Just like right screen is temporarily moved to a middle screen, and the right screen gets empty screen injected.

Did anyone face this issue and how to fix it?

If screencloud does not work well on Ubuntu 17.10, can you propose another tool for it?!