I often change line spacing of a single line by selecting the first character of a line and changing the line spacing. Normally, this will adjust line spacing for the one line, but I'm encountering a baffling glitch that changes the line spacing for the line under the affected bit of text where I changed the line spacing. Note that I'm changing the leading of the first character of a new paragraph line. Please see my screen record to see this in action. I have tried this with multiple fonts. I am using the most up to date version.