When a user disables tabledrag, a cookie is set, disabling tabledrag on every page on the site. For someone who was just playing with that link to see what it did (most common use case) this creates a less-than-ideal experience and bad impression of the software.

What we really need instead of a cookie is a setting. People who want tabledrag disabled permanently should use the setting. People who need to disable it temporarily will use the link.
Recent comments
well @herb I cannot believe it, but the webform module was there in modules on the disc, but missing in the listed modules, so I delete the module folder, and downloaded it again. Then...
My Webform Worksheets have disappeared
The only thing I can think of is to make sure Webform module is enabled and that the content type that needs to contain the webforms has Webform enabled for it. Edit the content type and make...
My Webform Worksheets have disappeared
@yorkshirepudding, In the end I fixed it by deleting the config/active folder contents, copying the config/staging/ files into config/active, importing the database again and clearing the caches...
Importing the staged config throws an error: another field with the same name already exists