As depicted in this gif, when you initially press the double quotes once, it puts an ending one for you. All normal. Press delete to remove the ending double quote, then hit double quote again: it’ll add an extra double quote.
100% of the time, and I noticed it within the last week or two. I don’t believe my typing style has changed, so it’s most likely a recent bug
I also noticed something similar in strings. When your editing a string, it treats it like your editing regular code (automatic closing bracket, closing parentheses etc.)