busfahrer303 Seems like the 60Hz mode isn't part of the whitelist:
2022-03-13 22:12:23.193 T:975 INFO <general>: [WHITELIST] Searching the whitelist for: width: 1280, height: 720, fps: 25.000, 3D: false
2022-03-13 22:12:23.195 T:975 INFO <general>: Display resolution ADJUST : 3840x2160 @ 25.000000 Hz (29) (wei-CENSORED-WORD-ght: -726778399819647164797157376.000)
2022-03-13 22:12:37.505 T:975 INFO <general>: [WHITELIST] Searching the whitelist for: width: 1280, height: 720, fps: 25.000, 3D: false
2022-03-13 22:12:37.507 T:975 INFO <general>: Display resolution ADJUST : 3840x2160 @ 25.000000 Hz (29) (wei-CENSORED-WORD-ght: 0.000)
2022-03-13 22:12:40.983 T:975 INFO <general>: Loading skin file: VideoOSD.xml, load type: KEEP_IN_MEMORY
2022-03-13 22:12:42.663 T:975 INFO <general>: CVideoPlayer::CloseFile()
2022-03-13 22:12:42.664 T:975 INFO <general>: VideoPlayer: waiting for threads to exit
2022-03-13 22:12:42.668 T:1126 INFO <general>: CVideoPlayer::OnExit()
2022-03-13 22:12:42.668 T:1126 INFO <general>: Closing stream player 1
2022-03-13 22:12:42.668 T:1126 INFO <general>: Waiting for audio thread to exit
2022-03-13 22:12:42.669 T:1134 ERROR <general>: Got MSGQ_ABORT or MSGO_IS_ERROR return true
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Do you use an HDMI 2.0 or 2.1 cable? If you are using a lower HDMI version cable, it's possible that the whitelist is incomplete.
PS: Whitelist AFTER re-enabled TV is wrong:
Feb 02 16:29:47.632820 LibreELEC kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:32:HDMI-A-1]
Feb 02 16:29:47.632865 LibreELEC kernel: [drm:drm_add_display_info] Supported Monitor Refresh rate range is 0 Hz - 0 Hz