So, I have been alerted to same/similar issue by one member of my board. He also observed it on another board running on Invision. I have asked my community and nobody else so far came forward as suffering from this.
I am running default theme with very minor modifications. The other board mentioned is running other theme.
I have spent some time with the member having issues and we managed to isolate this as issue likely only occuring on Android Chrome v110. They had a second phone, exact same model, that happens to run Chrome v109 and it works fine. I had them downgrade the offending device to Chrome 109 and issue did go away.
It does make me nervous as Chrome v110 gets rolled out further.
I have a video of the issue as well, should that help.
Whereas it does appear to be Chrome rendering related issue sadly it's so ubiquitous that I think it'd be best for Invision to try to get to the bottom of issue, and possible workaround