Shared tab amounts incorrect

Not sure if this has been raised before. I couldn’t see if it was. When I create a shared tab with a custom bill, changing the amount owed by each person isn’t reflected when you go back into the tab and instead shows an equal split (50/50).

Steps to recreate: Create a new shared tab. Add another person to the tab. Add a custom bill for 3628. Change the amount owed by the other person to 2176.80 (1451.20 for me). When you go back into the tab the amounts owed change and revert to a 50/50 split
OS:Android 11
Device:Huawei P30 Pro
App Version:3.77.0


The splits above are correct

The amount I owe has changed to the same as the other person.