Oops! Just did that on 3 auto-loaders.Do not use XF-7 on the slide of a 1911! Been there done that. It may failure to go into battery.
I cleaned my 1911 and used this sparingly with a Qtip when I cleaned in Fall. Went to use it in Spring and had problems at a CCW class. I just hosed the slide with remoil spray wiped it down and it took off like a scalded dog.Oops! Just did that on 3 auto-loaders.
I noticed the lube sticks real well & parts slide nicely. Now that you have mentioned this potential problem, I can see how that might occur.