New UI questions - tuning

Hi Joe - thanks for providing screenshots for clarity.

1 - Yes, but only along with the rest of the UI:

2 - Yes, it is called an ‘indent guide’ and can be disabled in the settings too:

3 - Not at the moment, but you are welcome to upvote the corresponding feature request: https://youtrack.jetbrains.com/issue/IJPL-161923

4 - Yes, you can enable the following option in the Advanced settings:

Thank you ,

though changing 1) looks weird, I increase the font for 1 point and for some reason it scales everything.

Is it really the expected behavior?

It is. UI scale is tied to font size (default is 13). If you set it to 12 or 14, only the font itself is changed, while icons and insets remain the same (UI scale is still 100%). When you change it to 15, however, the IDE is scaled up to 125% and everything grows proportionally.

It is possible to force the desired scale factor and unbind it from font size by adding the line ide.ui.scale=<floating point value> (e.g., 1.0) to Help | Edit Custom Properties, and restarting the IDE. It is not recommended though because it may result in unexpected visual imperfections.

Could you please also tell me is it possible to configure font for AI Assistant?

Or is it also linked to the root font?

Of course Joe. 

It is linked to the root UI font, but its size can be adjusted independently in the chat window settings:

Could you please tell me one more thing

is it possible to have always visible this folding/unfolding controls (not only when cursor is there) ?

Yes, you need to set the following option in the IDE settings to “Always”:

See also documentation on the subject: https://www.jetbrains.com/help/idea/working-with-source-code.html#code_folding