It is a mill. It is currently running a router for wood work. I intend to change out to a spindle soon. Clarifying - Been using the same setup for over five years, never had this issue before - have NOT changed my setup CAM profile - only change is since update to 2.8 when issue began and then as stated 2.9 update a few day before my first post about this figuring maybe it would fix itself. Using MeshCAM and DeskProto for the CAM G-Code generation depending on what I am doing - same issue using both. I - obvious - updated to Bookworm a few months ago to update from the 2.7 branch. One other item is the monitor can no longer be set to 1920x1080 stuck using 1200x after bookworm. Just throwing that in for sanity - is a pain too, tried all the video drivers, different display managers......qt...no resolution but ok I can live with that for now. the "run from here" is a larger pain.
I have at the beginning of code a few lines which run the router over to a position and then M6 so I can change bits - this is my "bit change" inserted into the code whenever a tool change is required and at start just for piece of mind [reminder to check] - no changes to the profile for G-Code generation in over three years.
I begin a program, it may be 100k+ lines, at some pint - usually more than 5,000 lines run but let's say the G0 Z4.5 above stock is at line 5,000, I then do what I stated - "escape" then do my moves, then left click on line 5,000, right click on line 5,000, select "run from here", goes back to the very first line of code - starts over from the beginning. every time, on all out putted ngc's not just one.
Will do the suggested M3 S3000 in MDI lines and try just for the sake of it even though is a router.
Will keep playing here to, will post if I find any solution - even if it's my fault. Would rather all knew what happens. Wondering why no one else has posted this issue?