Controls not displaying in 1 form out of dozens designer mode (IDE)

As of this morning there is 1 form out of dozens of forms the app has does not show any of the controls in designer mode and not even the correct size. Look like a brand new form except the form does not any text (new form would be form1, etc.).

The designer module is there as is the resx module.

When looking at the Solution Explorer showing all files the modules appear but no indented under the vb module. It is almost like VB is treating them as totally separate modules.

Went to a back of the source folder from 5 months ago and it has the same problem for the same form.

If I run the app the form does show all the controls but I am not able to see / change the controls in designer mode.

Every tried re-booting the machine.

Since the 5 month old backup has the same problem it is not something in the source.

Failed even when running from a different PC. Networked to open the sln file. Then copied folder to other PC. Even copied 5 month old backup to other PC. ALL THESE FAILED!

See attached image. You can see the 'bad' stuff and a very similar program with the 'same' form that is OK.

HELP!!