unable to change header image and CSS colours on forge.typo3.org
I am unable to upload a header image or change the CSS colours on a project at forge.typo3.org.
Settings -> tab "Information", scroll down to:
Header Image: [...]
Topbar Background Color (CSS Colors): [...]
Topbar Text Color (CSS Colors): [...]
When I choose a new image to upload at "Header Image" or enter a color code (e.g. "#ffffff" or "ffffff" or "white") at the colour fields, click "submit", the changes do not come through. No error message appears either.