No sure if its just me but since the new shared tabs update, I have found that it’s far to easy to accidentally swipe to dismiss a payment from the tab.
Then once you have dismissed a payment or two your request/owed total makes no scene, see example below.
I created a test tab and added to payments so I’m owed £3.22
The tab is then paid and I am owed £0
But If I then swipe to remove the transactions I added to the tab or they where accidentally removed them (Easily done when scrolling through the tab) I’m now owe £3.32 
I get that I owe £3.32 to pay back the payments that have been removed but if you have a lot of stuff on a tab it makes it impossible to keep track of. Is there really need for the option swipe to dismiss a payment, when you already have an edit option in the top right? As if this can accidentally happen it’s going to make keeping track of your payments a lot harder