Blender Version
2.80, 5f140e61c28c, 2019-07-19
Short description of error
"Snap during transform" is automatically disabled after performing a Move of an object or mesh element and using the "redo last" panel in any way; with other transforms, as Extrude, Rotate or Resize, this doesn't happen.
Exact steps for others to reproduce the error
Enable Snap During Transform, move any element in the 3D Viewport in Edit or Object Mode, then edit any value inside the "redo last" floating panel that shows after any action is performed or by pressing F9. Snap During Transform will disable automatically.