Custom field set behaving incorrectly in Contributions
A custom field set that is flagged to appear only for 'Donations' correctly appears when a contribution is made. However if a field in that set isn't completed or is in error, an error message is correctly shown but the custom field set disappears and is replaced by 'Additional Details' which is opened up. To enter the custom field set you have to start again with the contribution. This only happens when the custom field set is **not ** set to 'Any'. The problem found in 5.4.1, and can be reproduced on the demo sites which today are at 5.6 alpha1. Problem is also present in 5.1.2 but not sure about 5.2 or 5.3.