How to overcome these phpstorm bugs?

Question

phpstorm

It just boiled over.
1. what does this window mean? arises spontaneously, eats up 100% of the processor and everything that is from the RAM.
I will clarify, I do not delete any files at that moment.
2. When opening several windows in parallel (File->Open->Open in new window), they cannot be closed later. The contents of the window are closed, the "shell" itself remains hanging
3. Sometimes it stops responding to the keyboard layout. (only on win). just stops writing the latin alphabet and that's it.
4. How to explain to him that he does not need to index the project every time after opening?
5. figs with him, how to prohibit sudden re-indexing stupidly in the middle of the working day?
the computers are different, on ubuntu it seems to be more stable, on win generally turn off the light.