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When opening a document with custom style definitions, or creating one from a template, the custom styles are not visible in the style selection widget. However, OO does read the styles, because the styles can be updated from the context menu - just not assigned to new document elements.
OS version: Fedora 42
App version: 9.0.0 (flathub)
Downloaded from: Flathub using Fedora’s GNOME software manager
Additional information: This happens with all ACS templates. I do have all the custom fonts installed as system fonts.
I did more investigation, and it appears that the styles may not be showing because they are not “quick format” styles.
If I open the same .dotx template in MS Word, the styles also do not appear in the style gallery. However, they become visible as soon as the widget is popped out. Unfortunately, OO does not appear to have similar functionality, and simply does not show the styles.
The same issue appears to have been submitted for OO Document Server about 5 years ago:
Would it be possible for OO to simply ignore the <w:qFormat/> tag? Its very existence does not make much sense. If there are styles in the document/template, surely I would want to use them.
Of course, this workaround is not perfect, because not everyone would have access to MS Word, and modifying a template with multiple styles one by one quickly gets tedious.
Technically, it appears that OO’s model reproduces the MS Word behavior faithfully. However, there is no UI option to reveal the “hidden” styles, which can be problematic for some templates. Thus, I would still classify this behavior as a bug.