When you edit an embed image and you use a new link to replace the old one, a new thumbnail is not produced automatically (and the old one is gone). I have to use the "Rebuild thread thumbnails" option everytime.
When you move a thread from a forum to another one, the thumbnail is not rebuilt automatically. You have to rebuild the thumbnails cache in ACP everytime,
When you move a thread from a forum to another one, the thumbnail is not rebuilt automatically. You have to rebuild the thumbnails cache in ACP everytime,
Yes, nothing change but the location of the thread. But when the thread is in the new location (with an external image, not in attachment), the thumbnail is gone and I need to rebuild the cache to get it back.