I like to have the Properties panel un-docked and next to the Model window on my 2nd screen. This works fine on the first day, but if I save the model and close FlexSim, then when I come back and re-open it the next day the Properties panel does not have all the fields available.
I especially notice it with conveyors, where most of the fields are missing/hidden in the Conveyor and Conveyor Behavior sections:
I have tried closing and opening the Conveyor and Conveyor Behavior sections but I cannot get it to show the hidden fields.
The only solution is to close the whole panel and re-open it from the View menu, then it works fine and can be un-docked again.
Please add this to your bug list. (This has been happening in previous versions too.)