Is that normal and expected mobile functionality? I'm not aware of anything similar that provides tooltips when holding buttons, could you give examples of apps that do?
If such tooltips are added, please enable them on hover too. This would work with stylus (and mouse), of course, but also e.g. Samsung phones have a built-in option to enable hover functionality with fingers.
I've seen it in a calendar app long time ago (to display event details in a month view), but it's probably not very common.
Fair enough, don't think I've ever even tried to press and hold in that context before, to me it has always been a metaphor for a context menu à la right click (the F-Droid one seems particularly useless seeing as it already has the labels?).
I tried it on a few more Google apps, Gmail, Drive etc. and is part of Material Design so I have no issues for the Android implementation of it personally. - Material Design
I was looking just for this today, and found using this on Joplin desktop works…but the mobile no. Nor does exporting to PDF (most cherished as I use Joplin PDF exports for client sending docs), html is fine
Desktop render gives a hypertext look (works), again mobile it’s present but non-reactive.
A button would be nice, at least to have the hypertext style work…don’t know if the desktop PDF export is even a reality, at least export as html is available. I’m more of a user as oppose to a developer here.