The title bar height-width value is not available for translation. This value follows the strict 100x500 format, where in some languages spaces are added before and after the multiplication sign. This causes a mismatch with the values, for instance shown in the sidebar, where the value is translatable.
A possibly relevant merge request was started @ https://invent.kde.org/graphics/gwenview/-/merge_requests/220
Git commit 3663c774ca0b766583ee92d9b2776d67cf5d5c2a by Emir SARI. Committed on 31/08/2023 at 00:05. Pushed by esari into branch 'master'. Improve i18n of percentage and dimension values Enables i18n for the remaining width-height and percent values. Related: bug 473636 M +4 -2 lib/documentview/documentview.cpp M +1 -1 lib/documentview/documentviewcontroller.cpp M +3 -2 lib/thumbnailview/previewitemdelegate.cpp M +8 -1 lib/zoomcombobox/zoomcombobox.cpp https://invent.kde.org/graphics/gwenview/-/commit/3663c774ca0b766583ee92d9b2776d67cf5d5c2a