Dear McNeel Staff,
When transferring a window between different displays of different resolutions, or unplugging from an external display, Rhino’s zoom 1To1 setting gets confused and does not scale it to the right size, even though the whole time, Rhino’s Zoom1To1Calibrate scale bar is completely accurate to a ruler measure. The problem resets itself after quitting the app and reopening it on the screen of choice.
However, the mis-sizing still occurs on the external display when dragging the window there. Do look into this, as it can be quite misleading to think the drawing is a certain size before realizing everything once measured was quite far off. Thanks for taking this into account 
Thank you so much!
The Rhino 8 version number is (8.6.24101.05002, 2024-04-10)