Issue with error validation not updating correctly on continued use

[arrenv]

Description

Issue with validation discovered when testing https://github.com/JoinColony/colonyDapp/pull/3852. As described here - https://github.com/JoinColony/colonyDapp/pull/3852#pullrequestreview-1148851724

Expected behaviour

• The validation should be accurate when fields are updated.

Actual behaviour

• There are some inconsistencies in what triggers the validation (usually it's any change to the input but sometimes I had to manually click Fix it to see the errors number update) but I can't really determine the steps to reproduce. Here's a video of it happening (notice the first funding source updates the number of errors on change, whereas for the second one it doesn't)

https://user-images.githubusercontent.com/33682027/197577534-dc8bab53-6d90-4a24-8266-c0089c3e45c6.mov