Issues with WordPress 5.0

[lccwgtn]

I have loved using WordPress over the last few years but cannot express how horrible this new version of WordPress is. It has made WP the least user friendly web editor in the universe...

Here's a few of the things I find most irritating:

Get rid of the multiple scrolling, including the "Document" panel on the right of screen (Permalinks, Categories, Tags etc)

Preview button displays the existing published paged, not most recent edits

Adding an image is more complicated, as is adding a link to media item such as a PDF document. Need to add a block, upload the PDF, copy the link, delete the block then create a hyperlink.

Clicking the Use classic WordPress editor button doesn't work/no change

Switching between visual editor and code editor involves more navigation. Please add it to the main tool bar

If you preview a webpage it opens in the same tab as WordPress. Sometimes it is helpful easily view both the editor and the previewed page in order to make the required changes.

Occassionally the Add hyperlink field is locked open, cannot close it, so it floats over the webpage being edited.

Auto save can take too long. Even for a standard page of text with a feature image.

[inuya5ha]

I haven't tried the new editor long enough to find out all bugs you mention, but I'm totally with you.
I returned to the classic editor via plugin (so help me God with next WP versions) after noticing that the editor DOES NOT EVEN EXPAND to the available screen space. The developers all use monitors with 800x600 pixels I guess.
Also, large images are not shrinked for display in the editor. Needless to say the problem this introduces with high definition images inserted in posts... I just hope they give users the possibility to return to the normal, working editor.