Installing sudo apt install qtwayland5 has helped in the past for the native PureOS package. IIRC, nheko is now using Qt6, but qt6-wayland is likely not available on Byzantium, as is the latest release of Nheko. As the flathub listing mentions “Uses a legacy windowing system”, there’s likely no way to run this with the wayland — so you will have to live with blurriness for now.
1 Like