Created attachment 185191 [details]
Empty windows when trying to add cwl file for completion

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SUMMARY
When attempting to add a cwl file to configure autocompletion, no files are offered in the standard installation, and custom files are not added either.

STEPS TO REPRODUCE
1. Settings > Configure Kile --> "Complete" tab
2. "Completion files" section --> "Tex/LaTeX" tab --> "Add..." button
3. In the window "Completion files" --> "Install custom files" button
4. Selection of (any) custom cwl file

OBSERVED RESULT
No CWL files are offered in the ‘Completion files’ window, either before or after selecting a custom file.
No CWL files (other than latex-document and tex, which are initially present) appear in the ‘Configure Kile’ window.
No additional completions are offered by Kile.

EXPECTED RESULT
Proposal of completions from the custom cwl file.
Display of selected cwl files in the ‘Configure Kile’ window.
Display of cwl files in the ‘Completion files’ window for selecting additional cwl files.

SOFTWARE/OS VERSIONS
Windows: test with Windows 11 Pro
macOS: no
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: test with Debian Trixie (13) stable
KDE Plasma Version: 6.3.6
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.2

ADDITIONAL INFORMATION