Steps to replicate the issue

• Upload an image with UploadWizard and add a category that does not exist
• Create the category that was added to the image and dd not exist at that time
• Finish the upload process and re-enter the upload loop of UploadWizard
• Add the same category again

What happens?:
UploadWizard displays an error message even the category was already created hours ago

Example for File:6020 Sieglanger, Inn mit Inntal Autobahn A12 2023-09-11.jpg:
Category:Inn River in Tyrol (state) in 2023 was created on 22:26, 7. Feb. 2026. The file was uploaded on 01:36, 8. Feb. 2026. Even after many cycles of re-entering the update loop from UploadWizard and multiple uploads with the same category in different loops (see personal file upload history on Commons) I still got this error message when I added the already existing category to the file:

Translated message text: The category highlighted in red does not exist and is missing a description page. If a similar category exists, we recommend using that one. If not, please go to the new category page and add a description.

What should have happened instead?:
UploadWizard re-checks if the category exists and does not display the error message

Other information (browser name/version, screenshots, etc.):
Browser: Firefox 143.0.4 (64-bit). The bug does not seem to be related to the browser though,