Realtime Rendering toggle disabled after using Cloth Painting

After finishing cloth painting, the ability to toggle Realtime Rendering in the viewport is greyed out. Additionally, the Disable Realtime Override button doesn't seem to have any effect. This problem can be resolved by restarting the editor.

Tested in //UE4/Release-4.26 @ CL 15973114 and this occurred there as well, so not marking as a Regression.

1. Create a Third Person Template project
2. Open the SK_Mannequin asset
3. In the toolbar select the Section Selection button
4. Select the Mannequin in the viewport
5. Right-click and hover over Create Clothing Data from Section
6. **Select the Create button
7. *Select the *Activate Cloth Paint button
8. Paint the mannequin
9. Deselect cloth painting and close the SK_Mannequin window
10. Select the Hamburger button in the Top Left corner of the level viewport

RESULT:

Realtime Rendering cannot be toggled

EXPECTED:

After cloth painting, the ability to toggle Realtime Rendering would not be affected