In Windows, when a long path (>260 characters) is used to link a picture in a keyword documentation, that picture is not rendered in the documentation preview popup (when hovering, or using ctrl+space)
Long path support is enabled on the machine and it can otherwise handle the path, which is how to picture was placed to the target path (none of the folder names are longer than 255 characters)
Example:
[Documentation] 
I’m pretty much convinced that it’s a bug, but any suggestions are welcome
Sadly mapping the path to a drive to shorten it is not an option for me