Pretty simple issue. As a test using the latest 3.0.3 version (3.0.2 had t his issue too) i tried accessing my seed through the software. Whenever i enter the correct password, instead of showing me the seed, electrum just plain crashes completely. When i enter the wrong one, i am correctly informed of wrong seed? (but yes, i do have a backup of my seed). Anything i can do to help fix this?
Try deleting your electrum data folder if you have all your seeds and recover them from that.
Also, try downgrading and see if it's an issue on the other wallets. And confirm your download came from electrum.org.