No, sorry. We cannot put brush setting there, there are too many of them...

Unfortunately it is a system bug in iOS/iPadOS, which can happen in many other apps, like Pages, Numbers etc.
We reported the bug to apple, and send them video with all steps to reproduce it.

We will also soon publish a new update which doesn't fix this but displays an error message and doesn't grey out the top menu.

We hope Apple will fix it soon.

ps. Please reply to this post if possible:
https://discussions.apple.com/thread/254870123
This will increase the chance to be fixed by apple.

Yes, version 5.1.11 fixes this issue, it is now available on the App Store.

Sorry for that, update fixing that is waiting for review.

workaround: Duplicate any existing document.

It should work even when offline. I have no idea why it doesn't work in your case, it is all managed by system. Maybe there is a conflict in file version or something... Maybe try to reboot

Pigment mode set in Layers panel locks tool blending mode to Pigment as well. That's why clear blending doesn't work.

Update - it has been improved in new beta. Now you can define both keyboard shortcut and controller shortcut for a single action.

In current beta version - yes. Maybe i will improve that.

The quickly rebind the shortcuts you can export all preferences in 2 versions, for Magic Keyboard, and for Dualsense. Then import the correct version. Export/Import is available in Artstudio > Preferences > ... > Export / Import

hmm does that means that if we want to use the game controller on the go, we have to rebind the shortcut for game controller. And when we get back home to our workspace and want to use our keyboard, we gotta rebind the said keys with keyboard keys? 🤔