I am handmade ( or should I say, was handmade). I also have a trademark for my Brand, but I often put my Brand name at the end of my listing - same reason as you have stated - the product is far more well known that a small handmade business Brand.
I've tried to amend one of my products which didn't have my brand name in it.
It completely removed the Brand from the title. When I look at the title of the product in my inventory, it shows my Brand in first place in the title, but when I open the page, it doesn't show - EXCEPT when I look in my top bar on my computer (ie the bit you would normally see the name of the site you are visiting - and then the Brand is showing as if it's there first before the product.
So, here's an idea of what is showing for one of my products:
In my Inventory: "Lesley H Phillips Handmade Recycled Sterling Silver Square Necklace – Textured & Gift Boxed - Made in Dorset Jewellery"
What shows on the product page : "Handmade Recycled Sterling Silver Square Necklace – Textured & Gift Boxed - Made in Dorset Jewellery"
Top Bar on my computer is the same as what's showing in my inventory.
What I have in my title when I am in edit mode: "Handmade Recycled Sterling Silver Square Necklace – Textured & Gift Boxed - Made in Dorset by Lesley H Phillips Jewellery"
So, as you can see it has completely removed my Brand from the end and taken out the "by Lesley H Phillips" - leaving the Made in Dorset Jewellery.
This looks to me as if it's forcing us to have our Brand name at the front, but I can amend other bits of the title.
I do have other listings which don't change at all when I try to edit them, so I leave them alone as I can't face the merry go round of SS.
At one point straight after the transition, if I went into a listing to do anything - the very next day they kept saying the first image on the product wasn't white background images - they were....but not one of the pictures were showing. In my inventory the products were showing as search supressed. I then had to upload every single picture on the product again as if I only did the first one, the others just didn't show, even though they were showing when I went into 'manage images' .
After this happened about a dozen times, I gave up amending anything. Thankfully, this seems to have been sorted by Amazon now as it was getting beyond a joke.