Moving blocks via keyboard: screen readers don't notify operation done

[talksina]

Short description:

When using a screen reader, it's not possible to know if blocks have moved up and down, using Gutenberg's keyboard shortcuts ctrl+alt+shift+t -move up-, and ctrl+alt+shift+y -move down-

When it works

If a block is moved up and down using arrows, the "move up" and "move down" buttons on blocks toolbar, screen reader correctly announces "block moved from position x to position y".
But to reach the toolbar I'm forced to move the focus away from editing mode, with alt+f10 then navigate to arrows, then move back to editor.

Steps to reproduce

1. open a blank post or page, then add some blocks
2. focus on the second block. Both navigation and editing mode are affected by the issue.
3. try to press ctrl+alt+shift+t to move the block upwards one position. Then ctrl+alt+shift+y to move it back in its original place.
4. Screen reader - tried Jaws, VoiceOver and NVDA- give no feedback about the block's movement.

Expected results:

When pressing ctrl+alt+shift+t or ctrl+alt+shift+y on a block to move it, both in navigation and editing mode, screen reader should announce if the block has moved and where, like it does when I use the arrows.

Current results

When pressing ctrl+alt+shift+t or ctrl+alt+shift+y on a block to move it, both in navigation and editing mode, screen reader does not announce if the block has moved and where. It stays silent, and I'm forced to double-check whether or not the blocks have been moved.

WordPress and Gutenberg versions

It was present in 17.x branch and persists in latest 18.2.0 build. WordPress 6.5.2 is used.

[talksina]

Update:
when you are in navigation mode, the screen reader announces the block line. That is: if you move a block from row 6 to 5 with ctrl+alt+shift+t or from 5 to 6 with ctrl+alt+shift+y, it says "block: group, row 6" for example. But does not say that the block has moved from a row to another, as it does when you use the arrows.