kaffeine 2.01 on archlinux x86_64 4.5.4-1 plasma 5.6 Reproducible: Always Steps to Reproduce: 1. Menu Television 2. Channels 3. Edit Actual Results: There is no "OK" button.
The buttons got lost during KF5 conversion. Re-added. You should now be able to see them with the latest development version. I'll be merging the fix on a yet-to-be-released version 2.0.2.
Bug is fixed. Thank you. Tested with Kaffeine 2.0.2-1, plasma-desktop 5.6.4-1 on archlinux 4.6.1-2