Tested on iPhone 8 iOS 12. I have the "Increase Contrast" accessibility setting enabled and I noticed the inserter button has a different border color than fill color:

If I disable that setting, it has the same color:

Also, I noticed a faint white separation between the border and the fill. This is really not noticeable on screen, but it came up as I was cropping the previous screenshot and zoomed in:

On iPhone XS iOS 13, it's hard to spot but the toolbar has a left border, which is barely visible on light mode but produces an odd glow effect on dark mode:

RichText doesn't show a capitalized keyboard the first time it gets focus:

1. Create a new post
2. Tap on the placeholder text, keyboard should show uppercase letters
3. Dismiss the keyboard
4. Tap on the paragraph again, keyboard shows lowercase letters

I found this when inserting a media-text block, uploading an image, then trying to write the text, but it seems more generic to RichText

Thank you @koke for the review!

I have the "Increase Contrast" accessibility setting enabled and I noticed the inserter button has a different border color than fill color:

Yes, we made a trick with borders to make the icon look thicker. Definitely we should use a proper icon to solve this. Will create a ticket to track it.

But it's not regression so I'd say it's not a blocker 👍

it's hard to spot but the toolbar has a left border, which is barely visible on light mode but produces an odd glow effect on dark mode

This also have been noted by @iamthomasbishop before (I believe there should be a ticket somewhere?). Sadly it's true that it's a lot more noticeable in dark mode. Again, not a regression so probably not a blocker.

I found a couple of issues:

The Hx buttons from the Heading block have a different color in DarkMode.

This one looks bad: Adding a photo by taking it with the camera, the image gets rotated.
This doesn't seem to be a problem with gutenberg though, since it also happens adding a photo directly to the Media Library.

I wouldn't say any of these are blockers, so ✅ from my side on the release.

@koke

On iPhone XS iOS 13, it's hard to spot but the toolbar has a left border, which is barely visible on light mode but produces an odd glow effect on dark mode:

This also have been noted by @iamthomasbishop before (I believe there should be a ticket somewhere?)

I've been hoping to get this removed for a while – related issue here.

@etoledom 👇

The Hx buttons from the Heading block have a different color in DarkMode.

Def not a blocker, but important to fix :)

Adding a photo by taking it with the camera, the image gets rotated.
This doesn't seem to be a problem with gutenberg though, since it also happens adding a photo directly to the Media Library.

I think this isn't a blocker for this issue, but can we make sure to escalate this to ensure it's fixed asap?

I think this isn't a blocker for this issue, but can we make sure to escalate this to ensure it's fixed asap?

There's already a PR for this:
wordpress-mobile/MediaPicker-iOS#338

You can trigger an installable build for these changes by visiting CircleCI here.