When I install the Modeling Mode plugin in 5.3.2 (Windows 11), the tool layout doesn’t align with the tutorials on Modeling Mode. And the Unreal docs for 5.3 show 2 different layouts of this feature.
It’s kinda late for the answer but I’ll leave it here in case anyone else stumbled on to this post on Google.
I had the same issue from time to time. I don’t know why they defaulted it like that for us but it’s quite simple to activate it.