Hi,
only within the Vivaldi browser app – https://vivaldi.com/de/android/ – since some weeks and/or versions the 3 navigation buttons are missing (or are black on black?), but I can use/touch them:
Thank for your screenshots. Then it’s really strange why I do not have these buttons anymore.
But, sorry, I’ve just tried out whether the buttons are invisible only in dark mode (or »system standard« on /e/ OS) or in the “light” mode, too. And, yes, only in dark mode…
Therefore I’ll try to find the solution in the Vivaldi community – again… → this was the cause to post it in this community, my FP community
To be more precise: I’ve tried it on a FP2 running /e/ OS 0.11-q-2020090772203-dev-FP2 which was itself not in dark mode but I’ve changed Vivaldi browser to dark mode (settings -> design -> dark)…