Hi PhilStollery, thank you for taking the time to report this bug!
This indeed looks quite annoying, sorry about this! I believe it's due to the bar of predictive text suggestions, and we didn't take its height into account well enough.
In the meantime here's a workaround:
Disable "Autocorrect" in: Settings → Browsing → Autocorrect

This should help you access the address bar unobstructed while we find a better fix for this issue.
Thank you for your help in making Orion a better browser!