After v1.15 → v1.20 upgrade, Apply Tension always fails — bottom-belt deviation ~40mm

[bar]

1.22 is going to have a pretty major rewrite of how all of that works which might fix this issue. Do you see the same behavior on this version:

Interstitial Firmware Releases

Latest Test versions 2026/06/09 index.html.gz (146.4 KB) firmware.bin (1.9 MB) Updates since V1.21; Sanity check startup Z with non-reset warning for high Zm Retry LM solver with perturbed anchors FluidNC Config Items: show active Config/Filename instead of hardcoded maslow feat: OTA “Check for Updates” with configurable release stream Render live Find Anchors path trace from calibration waypoints Update startup Z/Z-home handling, persist Z-stop home across restart Find Anchors: switch canv…