Custom font does not increase in size when I zoom text with C-x C-=

My `init.el` has only one line: (set-face-attribute 'isearch nil :font "Helvetica") To reproduce the issue, run: emacs -q -l init.el Then press like this to zoom:`C-x C-= = = = =` Then do isearch like this: `C-s GNU` The highlighted text "GNU" appears to be small in comparison with the surrounding zoomed text. I am using mac by the way. Screenshot of the issue: https://i.imgur.com/qfSlyra.png Are you able to reproduce this? How to resolve this so that the isearch highlighted text also grows in size as the buffer is zoomed?

`C-x C-+` maybe? I.e. press `Shift` and `=`

`C-x C-=` behaves exactly the same as `C-x C-+`, so how would `C-x C-+` help? Do this: emacs -q Then press: C-h k C-x C-= What do you see? Do you see this? C-x C-= runs the command text-scale-adjust (found in global-map), which is an autoloaded interactive compiled Lisp function in ‘face-remap.el’. It is bound to s-0, s-=, s-+, s--, C-x C-0, C-x C-=, C-x C--, C-x C-+. (text-scale-adjust INC) Since `C-x C-=` and `C-x C-+` are bound to the same function, I don't see how `C-x C-+` is going to help. I did test `C-x C-+` and it reproduces exactly the same issue in my post. Were you able to reproduce my issue? Did `C-x C-+` resolve the issue for you?

`(custom-set-faces '(isearch ((t :family "Helvetica"))))`