Today I did an upgrade from V18 to V20 (MTP 700). Everything seems to be fine.
But, on my start screen I've been using some [Symbolic I/O Field] with a graphic list for visualization.

After loading the project the fields are empty, without graphic symbol. Switch to another screen and back, the symbols are appearing in the fields.
After a reboot of the HMI there is the same situation.

The [Graphic I/O fields] are working proeperly.

After reboot:

After changing the screen:

Sorry, I don't know what you mean exactly.
But it used to work before and I didn't change anything in the program.

Thanks in advance !!

Understood. At first it was without a standard value, like this:

Now I adjusted a standard value as well and it works:

But in V18 it wasn't necessary.