I recently discovered our frontend widget library draws an SVG to implement Radio instead of using <input type="radio">. I was looking at it because they forgot to add a "disabled" attribute.
Best case I'm hoping it's because they were required to get an exact design, but they really should have pushed back on that one if so.
And for the ones that remember to implement middle-mouse click to open new tabs, forgets that one can also do CTRL+click to open in new tab, or vice-versa.