The image handling in the WYSIWYG-editor with GIF images is buggy.

The image handling in the WYSIWYG-editor with GIF images is buggy.

e.g.

• Create a completely new page (never existing before!!).
• Click "save & continue"
• Insert a GIF (picture.gif) via Image -> Insert image dialog.
• Click "Save & view"

--> There are now 2 attachments instead of the one expected: picture.gif and picture.png.
When clicking on picture.png the error "This template does not exist" is displayed.

Another use case:

• Open an existing page with a GIF image in the WYSIWYG editor.
• Resize the image.
• Click save & view
  --> There is now a picture.png instead of the picture.gif in the attachments!
• When editing the page again, only the file name (picture.gif) is displayed.
• But when pressing save&view, there are now 2 images again in the attachments.

Somehow the WYSIWYG editor does convert between gif and png (why?) and not always cleanup.

Reproducable in our system and also in the Jetty/HSQLDB.

It works fine when using only PNG.