Good news! I had some free time this morning and looked at these issues. I think I fixed them all, but would like you to test them:
https://gitlab.com/alaskalinuxuser/kaidan_0_6_0/-/jobs/12427701531/artifacts/raw/bin/ubuntu-touch/im.kaidan.kaidan_0.6.0_arm64.click
In landscape mode the list of contacts scrolls and you can select ones from the bottom.
In landscape or portrait mode, the search bar is now wider and usable.
The keyboard height is now figured mathmatically, so it should scale for everyone and work/look proper.
If you have time and can test this out, that would be great! Working good for me on Noble 1.1, with FP4, but would love to hear feedback from you all. Thanks for helping me make this better by pointing out issues that needed addressed!