Missing messages icons + Blur Artifacts

(Early 2008 15" MBP, Core 2 Duo, Geforce 9400m & 9600m GT, MacOS 13.6.6)

Title pretty much explains it.
Where the record voice and add images/gifs buttons should be, the icons aren't.

The buttons are still there in spirit, because clicking where they should be still works. This isn't a dealbreaker, but I'd like to fix it if there is a known solution.

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https://preview.redd.it/k1bm01zrhirc1.png?width=784&format=png&auto=webp&s=3da53a9661752eda3059bf2aec067e390241d7d0

Also blur in safari for example works when the window is focused, but artifacts when I click on the desktop for example. This is with beta blur on.