The mentioned properties have a default value at design time. When that default value is modified using the property grid at design time, the IDE automatically generates code in the InitializeComponent sub of whatever control/form you are editing. When you change one of the defaults mentioned properties that code gets added to the designer, because it is no longer the default, well at this point, even if you use the designer to change it back, instead of deleting that entire line it added, it just changes the value being set in that line.

Evidence points out that the error is not caused by a specific value set to the mentioned properties, but more along the lines of the fact that value changed. This means that at the time of the unexpected behavior, the value could be true, false, or nothing and the same error will occur. So basically, really what causes the problem is the existence of code in the initializeComponent sub that modifies the mentioned properties (regardless of the value being modified to).

*It is quite possible other properties could have a similar issue... Which I imagine the soon to be explained workaround would also apply...