My first attempt at Sally’s Sandwich Bread

I just baked Sally's Sandwich Bread from Sally's Baking Addiction for the very first time, and I'm really curious to hear your thoughts.

A few things surprised me, and I'd love some insights:
*second rise size: is it normal for this bread to get this big during the second rise? (last photo was after I just put it in the oven)

*softness & structure: the bread turned out incredibly soft. Is that typical, or could it be a sign I underbaked it? The structure seemed a bit weak, especially after I brushed the top with melted butter right out of the oven – the crust got a bit crinkly and the bread seemed to "bend" rather than hold its shape. Should I skip the melted butter brush next time?

*windowpane test: I'm excited because this was my first time successfully achieving the windowpane test (as you can see in the last photo).

A little note on salt: My husband and I both found it a bit too salty, so next time I'll definitely reduce the salt from 1.5 tsp to 1 tsp.

(Please excuse the inconsistent lighting in the photos – it's not great here right now)

Any feedback or tips you have would be greatly appreciated!