Could you please share a bit more about your issue?
Which browser do you use to create/run your app?
I have mad a test on my side (within Chrome), and don't have the issue that you mentioned.
Based on the compatibility issue of the browser, not all features of PowerApps are supported within all browsers. e.g. Some new features of PowerApps are not supported in IE browser. In addition, if you run your app in IE, you should turned off the Compatibility View option.
So you had better to create/edit/run your app within Chrome browser or Edge browser. More details about supported browsers for running a canvas app, please check the following article:
If the issue still exists when you run your app in Chrome or Edge browser, please consider take a try to turn off/disable the "Improved app rendering (final validation)" option within Advanced settings of App settings, then check if the issue is solved.
Community Support Team _ Kris Dai If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.