Search input does not send on enter/dpad center with remote [v1.6.7, Android TV]

[islisis]

Stemio (v1.6.7) on Android TV (10) does not allow searching with keyboard remotes due to the following issues.

1. After selecting the search input field and entering text, pressing "enter" or "dpad center" on a remote does not send the search input.
2. No onscreen search button is available which could alternatively be pressed to send the search input.

Voice search works with no problems.

A solution to "1" above would be ideal.