I really wanted to give the new Chromium-based Edge a try, but I eventually gave up because the new Edge is terrible at PDF annotation (which is the main reason I used the legacy Edge).
Firstly, the writing on PDF is much more terrible on the Chromium Edge. It is slow and very laggy.
Secondly, I cannot use my finger to scroll the PDF file while using drawing anymore.
And another thing, may be a bit nitpicking, but whenever I want to save my annotations, back then I only need to click on Save. Now everytime I press Save, it always shows the Save As.. dialog.
All of these make annotating on PDF files becomes a nightmare. That's why I kept using the legacy Edge.
...until this. Now the legacy Edge was automatically removed and I'm stuck with the Chromium Edge with no way to roll back.