This is happening after I upgraded to 11.3. I am on Linux Mint.
Whenever mathematica finishes evaluating the cells in a Notebook, if that Notebook is minimized, it will pop up and steal focus from my other windows. This is very disruptive.
Is anyone experiencing a similar behavior? How can I disable it? I would like the Mathematica Notebook window to remain minimized after it finished the computation. Perhaps it could flash in the taskbar, but stealing focus is definitely too much.