1. Doesn't work WIFI module, as in previous LE versions (16.x to 17.x). According to MAC Address range: 44:2C:05:00:00:00 - 44:2C:05:FF:FF:FF, vendor is "AMPAK". I tried to run LE with different device trees, working without WIFI support was: gxbb_p200_1G_100M.dtb, gxbb_p200_1G_100M_RealtekWiFi.dtb, gxbb_p200_1G_wetek_hub.dtb, gxbb_p200_k1_plus.dtb. But WIFI work on LE13 with "meson-gxbb-nexbox-a95x.dtb" device tree.
2. Properly working software deinterlace on SD resolutions was from 16.x to 17.x versions, but from 18.x version it work with frame dropping.
3. From 18.x version doesn't work OK button, but it fixed with this solution manually: RE: Ok button doesn't work on H1 remote
You have written a lot of things, but there is not much meaningful information in it.
What box do you have? And specifically, what kind of WiFi chip is in your box?
If you could send me a log, both from the previous working and the currently non-working versions, I might be able to help.