Hi! Thanks for the reply. Man I am a bit frustrated by this update. I do like the overall changes. But some stuff they better not have touched.
Well I have the Kindle Paperwhite 2 (6th Gen). On the older Updates and on rare occasions the Beta-Browser crashed when dealing with bigger webpages. And sometimes the Kindle Store crashed on exactly that one menu entry.
The menu issue (the above screenshot) might not affect you because you seem to be getting US content. If you look inside the Kindle folder under the .active_somewhat_blah folder, you see as store folder and if you go inside RemoteContent, then you see some *.html files with plenty of javascript (?) magic inside. This stuff is being downloaded from the Kindle Store.
Even if you delete the entire store folder and restart your Kindle, the content is being pulled down once again. I am quite sure, that the javascript code inside might be causing this issue. You might have noticed that the Kindle Store often shows different content, different clickable content and menu entries. From time to time they even re-structure the Store.
I bet during translation of the pages that someone has blown up some metadata inside there. It could also be that the javascript engine triggers some functionality (like umlauts) that it can't deal with and thus cause the entire thing to reboot. Though I believe the underlaying Kernel is Linux and thus under no circumstances should cause a reboot. It only affects that one menu entry.
Another theory could be that the compiler used (or compile options) might render wrong CPU mnemonic (machine code) that may (in this particular situation) trigger some crappy code segments and causes the crash. I would be able to debug it (I am programmer and Linux Kernel Driver developer). But I don't intend to waste my time with a reading device.
With the 5.7.2 update things got horrible here. I was laying in the bed a few moments ago and read that particular book ...
... sadly I gave up after a while, after realizing that they also changed the appearance of the fonts (somehow they look thinner now - which causes a lot of pain for me to read the words (I am short sighted)).
After closing the book the entire Kindle rebooted again.
This is now the 5th or 6th reboot because of crashes after I updated to 5.7.2 earlier today (german time). Some crashes happened when swiping through my book library just by changing one page to another (from the 8 pages I have), one crash happened in the Kindle Store and some crashes just by reading books (swiping and closing).
Now from the "major" update perspective. We don't really know what they changed. Maybe a new compiler was used, maybe they switched from using gtk2 to gtk3 (this explains using the new symbolic icons), maybe a new kernel was used. Maybe simply stupid programming issues (like memory leaks and so on). Who knows.
The percentage issue I explain after the following quote:
Please look above. I was referring to the book above. The book showed me 23% inside the book and had 26% outside printed on the cover. That book has about 300 pages all in all. The 1000 pages book that I was mentioning was just a theoretical thing. Let's pretend you may have a 1000 pages book installed. Then 23% of 1000 pages result a different value (page 187) than 25% of 1000 pages (page 200). In theory the values differ by 13 pages.
Now the books that show me 100% when I swipe to the cover (within the opened book) and then close the book:
Thanks for the help. I will reply tomorrow. Good night!