I just poked around YouTube and it seems pretty common. This short has two guys saying it the way I do: https://youtube.com/shorts/hbU9NOvOUik

I’ve never paid mind to it, but I think I pronounce it like you do. If I focus on not hitting the sh sound it sounds English, my normal accent is West-coast American.

Straw, strength, strip, all of those words I place a blending sh sound before the tr sound. If anything it might sound closest to ‘schrawberry’.

Interesting! I’ll pay attention to how others say it going forward.