Just to close this, I’m fairly confident that what happened here was one of two things, either:
- While jogging down, the jog key or on-screen button was clicked too long resulting in a continuous jog movement. In this case we’ve made a new setting to address this here: GSender jogging bug holding the key down - #2 by chrismakesstuff
- While jogging, the ‘Rapid’ jog present was accidentally clicked instead of the Z- jog button, which meant that the next time you jogged it jogged far more than the smaller increments of the ‘Precise’ preset. We’ve since addressed this is 1.5.4 by swapping the two profiles so this misclick doesn’t happen anymore.
Hope that helps!