Messages not showing split screen

[userdhVh9Cgr6y]

It seems since the last update, the default messages app is not showing creectly. 

It used to have conversations on the left, and the message you were actively in on the right. 

It shows the same orientation now, except the message that you are replying to on the right us super small.

Anyone know how to restore the right side so the occupy the same space?

[bluecast1]

Yes on the white edge slide it over to make it bigger

[userdhVh9Cgr6y]

There is no way to do that. I have tried pinching, and sliding, using multiple points. It will not open back to the full messages.
I use the full open screen of my fold alot.
I used to use the good messages app, but I always had issues with IOS users

[VerbumVeritum]

Settings>Apps>Samsung Messages>Storage>Clear cache. Clear data if that doesn't work. This will essentially reset the app. If both don't work, kindly power off the device. Press + hold power and volume up buttons until the Samsung logo disappears. Using volume keys, highlight Wipe cache partition then power to select and confirm. Next, highlight Repair apps with volume and then power again. This reindexes all apps and wipes the cache partition.