Problem implementing Upload capabilities

[PLuebeck]

I have implemented the editor without any problem but the image upload does not work for me.
The API has the necessary FilesController (for me MdFilesController) and HomeController (for me RootController).
The Frontend has the MarkdownEditor with same implementation of the Upload demo page.

When I try to upload a file the frontend disconnects for a short period and the display that it is uploading the file. Not a single breakpoint in the events in Frontend or the API are triggered and it displays "Uploading" indefinitely. As OnImageUploadStarted is never triggered i would think it is somethin in the Frontend.

The only differences i can see from your Demo is that mine is an InteractiveServer and I use http instead of https. Does the interactive server change anything in the implementation?

Additionally the MarkdownEditor is nested in a few divs and an if so it is only displayed with a condition:

I also tried it without AutoSave:

If you need more info let me know.