Anyone seen something like that???

[Dav abdull]

My kid made 2 button
On camera samsung s9

 

[dew066]

yes you can create another floating camera action button. if you don't want to see it anymore I believe you just drag it to either the top or side of the screen to get rid of it

 

[bbgpsuser]

You can go into Camera -> Settings and turn off "Floating Camera button".