Virtual keyboard fails to appear in Fedora 35 Workstation

I have installed Bitwarden 1.3.0 on my MS Surface Pro 3 running Fedora 35 Workstation. I run the Surface Pro in tablet mode (no physical keyboard). The virtual (onscreen) keyboard pops up whenever required in all other apps I am running but not in Bitwarden. No amount of tapping around in the input fields will activate the v. keyboard. Does Bitwarden block this sort of input? Is there a workaround?