Content of a text component disappears when editing a news article

I am the owner of the page and a SharePoint admin.

When I want to edit the page/article, the content of the text component which was visible before editing disappears. After checking the html source trough inspection it showed a display:none inline style.

After a while the content appeared and could be edited, but after saving the text was not changed.

I changed 2024 to 2025 but it automatically put a comma between 2025 like this: "202,5".

I would like to know a solution. Thank you in advance.