GNOME Bugzilla – Bug 699000
On screen keyboard should have a button to switch input language
Last modified: 2019-02-27 18:18:26 UTC
All touch-enabled OSs has this. It makes sense, because it's easier to switch while typing instead of looking for the language indicator on the top bar. This needs some attentions from the designers on how it should be implemented, tho.
Fixed in 3.30.