This bug has been happening for a while and just occurred again in my new save with zero mods or cc. My sim will use the streaming drone from get famous to record a video, but when the recording session ends the video that is recorded does not reflect the skill my sim was doing. In this case, my sim recorded himself playing guitar but the video saved as a painting video, but I've also see plenty of other mix ups (cooking saved as charisma, singing saved as cooking, ect).
I will note that what the video shows up as seems to always be a skill the sim in question has maxed (my current sim has level 10 painting, and other sims this happened to had also had level 10 of whatever the skill was), while the skill the were recording is not maxed.
I can't remember how long this bug has been happening, but it may have started way back when Get Famous first came out.
Edit By crinrict: Adjusted Title to fit old bug report.