Stocks complication not showing on Modular Ultra

I have a Ultra 2 (watchOS 10.1.1) and an iPhone 12 (iOS 17.1.1).

When using the Modular Ultra face, the Stocks complication does not work on any position of the screen. It shows a dark grey square in the complication position like can be seen in the in the upper-left, middle and bottom-left positions of the image below:

Stocks works perfectly on other faces, like Infograph as you can see in both lower positions of the image below:

I already:

• Turned off and on the watch
• Turned off and on phone
• Removed and recreated the face

The Stocks complication does not appear in the Modular Duo face too.