Get rid of MacBook prototype mockup

Do you know any way for getting rid of the Macbook mockup while on “Actual size 100%”

I always work on MacBook frame but on the protoype I sometimes have 4 options (Actual size 100%, Fit to screen, Fit to width, Fill screen) and sometimes 3 (Actual size 100%, Fit to screen, Fill screen) and I cannot comprehend why.

Does anyone have suggestions ?

To get rid of the MacBook mockup, change your prototype device to “Custom Size” but use the same dimensions that you’re currently using (e.g. 1512x982 for 14").

I don’t know an answer for your second question but maybe it’s dependent on how wide your current window is? Just a guess.