Hi @Percara, I had this happen a time or two. From my experiences, YMMV…It might be a combination of a couple factors 1) how tight you tape the diaper/brief, 2) too much SAP levels, and 3) your movements like squatting or up/down activities.
Overall, only aim for a snug fit, tighter isn’t better. Lastly, if your situation allows, consider changing more often verses mega-Godzilla absorbency.
The following suggestion depends on your mobility: Start with taping the top tapes by standing against a wall with bent knees, this helps to create a tighter waist fit. For the bottom tapes, straighten up into a normal stance and secure them for a snug fit; Not so tight to leave marks or over stretch the tapes/diaper.