- Edit a .tab page in the Data namespace. E.g. https://commons.wikimedia.org/w/index.php?title=Data:Sandbox/Krinkle/test.tab&action=edit
- Change value of "license" to "x".
- Preview or Save page
Following (expected) error is rendered:
⧼Parameter "license" must be one of the valid license codes, for example CC0-1.0+⧽
While the error is expected, there are unexpected ⧼⧽ symbols around it. This suggests that may be the error message itself is wrongly interpreted as a message key and then attempted to be retrieved again. Which falls back to rendering as ⧼key⧽ when the message is not found.
Also, this message should be styled to look like an error. E.g. using the default class="errorbox" or some such.