[Feature request] Open with does not auto-save or suggest to save

[opk12]

Is your feature request related to a problem? Please describe.
When working on a screenshot made with lximage-qt-screenshot, File - Open with is greyed out (disabled) and there is no indication of the reason.

Describe the solution you'd like
Open with automatically saves to temporary file, or opens the Save as prompt, or shows a message that explains why it is disabled.

Describe eventual alternatives you've considered

Context

I want to screenshot, then crop, blur, write labels, draw circles. Digging the GitHub issues, I found manual saving is required. This should be advertised or done automatically, because it's not the user workflow, manual saving is a workaround for not auto-saving.

lximage-qt v 0.16.0-1 from Debian 11 repo

[stefonarch]

The screenshot tool of LXQt is ScreenGrab which offers all you like to have, the screenshot part here isn't developed furthermore.
The .desktop file for screenshots has even been removed from LXimage-qt back in LXQt 1.0.0.