Errors in “Data Validity” throughout the app

[leinharte]

Hi.

An error occurred at the "Valid if" in some of my apps. What was previously working well suddenly encountered an error.

The symptoms are as shown in the picture below.

The "Valid if" formula is as follows,

The test result only shows a right parenthesis symbol, like this:

How can I solve the problem?

[Kirk_Masden]

How about the following?

LIST("aaaaa","bbbbb") 

I just checked an app of mine that has been working well and found that I used the LIST() expression, not {}.

But, of course, if {} is not fully supported, then there should be an error.  That may be a problem on the AppSheet side.

[leinharte]

The result is same as follows.

This seems to be a very strange case. I tried deleting all other tables except the table where this phenomenon occurred, but this phenomenon continued to appear.

I'm building an app from scratch and it's not too much of a hassle.
However, since the cause of this phenomenon is unknown, I am concerned that it may occur again.