I tried another clean copy of mIRC. Clicking fast, I noticed the same thing.
I went back and checked the clean copy and my normal mIRC copy, and tried it SLOW. I was able to make it act up on my normal copy, but doing it SLOW on the clean copy was a complete washout.
Looks like it was a two-fold issue of a goofy copy of mIRC and overclicking on it and the clean one.
Thanks for your patience.