I am running roon as a playstore app on my chromebook (asus c302) successfully. the only hick-up i find is that it randomly selects/ highlights an album when i just hover my cursor over the roon app interface. It then tends to look like this:
I think you may have inadvertently used gestures to perform a two-fingered touch the albums … this will select one or more (blue shading) and cause the bar across the screen to display. This is normal behaviour.
Same as my MacBook … maybe adjust the sensitivity if you’re triggering a two-finger tap. Gently placing two fingers on the trackpad should not register as a tap.