Android 10 on Samsung s10e.
Every-time I open a PDF or TXT file I am prompted to select which app I want to open the file with. It does not matter which app I select, the setting is never remembered, I am prompted with the same question next time I try to open the file, despite clicking "always".
Already cleared the default for all apps in Settings, problem is still there.
edit : it turns out the problem also happen for other file types like .txt or even .png files, but not for .docx My guess is problem arises only when there is more than one app capable of handling the file type.