I would support this - it has been seen before by many users (see e.g. here: Magnetic bed and 3D print head bumping into model). Sometimes parts of the print warp up, or you have a blob of overextrusion, and when the nozzle catches this, the magnets of the platform are not strong enough to keep the sheet in place. Some people added more magnets - this is how I solved it: Magnetic print sheet fixation - #10 by Hauke