Handbrake locks my .ass file

[dimailer]

I am editing .ass in Notepad, then importing it in Handbrake.

After every export, I tweak .ass in Notepad and try to save it to re-import in Handbrake, but it won't let me, because .ass is still open in Handbrake:
"The process cannot access the file because it is being used by another process"

This happens even if I clear the .ass in Handbrake. In Process Monitor, it shows that Handbrake process still uses the .ass.

The only ways around it seem to be either of the two:
— Handbrake — quit and restart it every time, then re-import the video and the .ass and choose the preset
— Notepad — save a new .ass file after each tweak

Both are hassle because I am experimenting, and that means lots of trial and error, so these excessive clicks add up.

Any secret I don't know?

[sneaker]

I would report it on the HandBrake github issue tracker.