ERG mode wattage target can get stuck during session

MacBook Air 2019
Kickr Core 2019
No companion app connected
No bike computer connected

Same happens to me specifically on climbs: if current workout section at target wattage ends during a climb, the following “free ride” section still keeps the same target wattage of the previous one. Tried disabling ERG in game, stopping and re-starting pedaling, or lowering the target bias but it still remains stuck to the previous section wattage.

All of it ends however when reaching a flat road, with the trainer eventually switching to SIM mode until next section.

Trainer: Wattbike atom
Device with Zwift App: Apple 4K tv
ANT + or BLE: BLE
ERG mode or SIM: ERG

If an interval is (E.g.) 400 watts then goes into a free ride interval the wattage stays at 400 watts.

Trainer: kickr core
Device with Zwift App: Dell windows 10
ANT + or BLE: BLE
ERG mode or SIM: ERG (erg would not switch off)

Trainer locked in at low wattage around 130W and it would not release or change. I tried switching erg on and off, adjusting trainer difficulty, and workout bias.

Wahoo Kickr Core, newest firmware
Appletv 4HD newest update
Apple Companion (not used as BLE tether)
BLE
ERG
following a workout, the trainer stays in ERG mode, at the same wattage as workout cool down. Resetting zwift results in chaotic SIM experience (watts/gradient/erg fluctuating constantly)