Element picker generate no match suggestion of filter to dom tree

[krystian3w]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• This is not a support issue or a question. For any support, questions or help, visit /r/uBlockOrigin.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• uBO uses default lists and settings.
• using a new, unmodified browser profile.

Description

Element picker suggest no working filter (e.g. omit <a> from dom tree) on cosmetic list, also by sliders.

A specific URL where the issue occurs.

https://pl.wikipedia.org/wiki/Plik:Flag_of_Poland_(normative).svg

(this is HTML5 not real SVG direct url)

Steps to Reproduce

1. open page

2. try block Polish flag

3. form suggested list click on someting very similar to "##[src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_Poland_%28normative%29.svg/800px-Flag_of_Poland_%28normative%29.svg.png"]"

4. filter no works due have invalid relations:

   ! invalid
   ###file > [src]
   !
   ! correct should be:
   ###file > a > [src]
   ! or
   ###file [src]

Expected behavior

Generated filter compatible to save by "Create"

Actual behavior

Generated filter incompatible to save by "Create"

screenshot

uBO version

1.45.3b0

Browser name and version

Firefox 107b9

Operating System and version

Windows 11

[gorhill]

Regression from gorhill/uBlock@feaa338#diff-1d458db50255dc41294f582831b2dd40eb14ac9e636ba1a8e94b7163982a1e18.

There were so many changes in that commit that I accidentally committed at the same time changes which were not meant to be part of that commit, these were experimental changes to the picker.