@Turnervisual, a code fix was made in June for viewports in layout and released in 2024.0.2 (see release notes: https://help.sketchup.com/en/release-notes/sketchup-202402 “Fixed an issue where viewports could shift in select instances when the scene was changed”)
If the fix has not addressed this issue, please create a bug report at https://help.sketchup.com/en/contact-support/technical-question/form with steps to reproduce (and ideally also a sample model) so that the dev team can look into this, thanks!