LockLeft, LockRight not respected

I have a containercontrol with a WebToolbar and a WebLabel.
When i use the LockLeft and LockRight (in combination with LockTop), i save the project and i use
Lock Position (right mouse menu).

When i deselect and re-select the control (WebToolbar or WebLabel) they seem to ignore the LockLeft or LockRight
in the inspector. While i selected both LockLeft and LockRight, locked the position and saved… None helps to keep the properties.

Anyone else seen this?