This has to be because Count in the OP is a string variable (or at least not a number variable)? You certainly can write Count = Count + 1 and the editor should not change anything. Whether or not it compiles is another thing, but to automatically drop the + ?? Makes no sense to me. Think about it - how many times have we all written i = i + 1 and never had the + symbol removed? I can only thing there is an auto correct thing going on in the vbe, assuming that's even possible.
Or perhaps I don't understand what the issue is.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.