Firstly congrats on the weight loss! Sounded like you had your goal and saw it through, so that's good.
In regards to strength loss, it'll happen. Especially on the Bench. That's typically the first to go. I just did a cut myself and toward the end dropped a little on some Bench exercises.
The important thing is, don't fret it. Just maintain this bodyweight and the strength will return. So just keep at it.
Welcome to the forum and consider starting a training log. Best of luck.