Reflective part of mirror does not resize

Product: The Sims 4
Platform:Mac
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What expansions, game packs, and stuff packs do you have installed? Cats and Dogs
Steps: How can we find the bug ourselves? Go into build mode, select any mirror, place in world, and resize it using the keys "[" or "]".
What happens when the bug occurs? The reflective part of the mirror does not resize with the frame of the mirror.
What do you expect to see? The reflective part of the mirror should stay inside the frame.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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The middle mirror is not resized, and its reflective area is in the frame as it should be. The two on the right have been reduced and the two on the left have been enlarged, and their reflective areas are out of the frame.

Same thing here.