Library and board updates stall after 2.3.3 auto-update

Same here! Linux Mint 21.3 Cinamon 64 bit. With IDE 2.3.3 I had every time a stall while installing a new board or libary. For install this, I downgrade to 2.3.2 (both versions on my Linux) and restart the IDE 2.3.3 without any problems.