https://bugs.kde.org/show_bug.cgi?id=410980
--- Comment #7 from caulier.gil...@gmail.com --- Maik, I found something important about AppImage and LANG=C stuff. In fact the dysfunction described here (and certainly other ones in bugzilla), depend of the options used to compile Qt5 for AppImage. Typically, after Qt5.9, the icu library support for internationalisation become deprecated and iconv must be used instead. Also, under Centos6, libicu become an older dependency, and recompiling this library will make a big puzzle. So i switched the options to compile Qt without icu. But, now as i see when i migrate from Qt 5.11 to 5.12 LTS, using iconv generate plenty of warning on the console when digiKam is running and QCompleter class used to populate albums/tags list from database. This particular warnings on the console are common in fact and easy to found in Qt forum. To resume: never compile Qt without icu support, as for the moment, this do not work as expected. As we migrate the AppImage build host from Centos6 to Mageia6, by chance libicu is a very recent version in Mageia. I check also the Qt5 rpm spec from Mageia git repository to see how Qt is compiled, and i see that ICU still here. So i currently recompile digiKam 6.4.0 AppImage with ICU support to see if this problem disappear. Best Gilles Caulier -- You are receiving this mail because: You are watching all bug changes.