First 2 characters in Paragraph, Heading and Verse blocks disappear on IE

[tellthemachines]

Describe the bug
On Internet Explorer 11, when writing in Paragraph, Heading or Verse blocks, the first 2 characters typed don't appear. If Delete key is pressed before entering any text, then all characters appear normally. (This is Delete, not Backspace.)
This does not happen on all rich text fields; Quote, Pullquote, Code, List and Table work as expected.

To reproduce
Steps to reproduce the behavior:

1. On IE, add new post.
2. Add a paragraph block and start typing.
3. Verify that first two characters did not appear.
4. Add another paragraph, press Delete and then start typing.
5. Verify that characters now appear normally.

Expected behavior
Expected all characters to appear when typing.

Desktop (please complete the following information):

• OS: Windows 7 and Windows 10
• Browser: Internet Explorer
• Version: 11

Additional context

Using up-to-date master branch. I checked that this issue is reproducible as far back as version 5.8 of Gutenberg, but didn't manage to test any further back than that.

[youknowriad]

Is this still happening? Seems pretty serious if it's still the case.

[tellthemachines]

I can no longer reproduce this as of 6.9.0. However, as of the lastest master, the editor is completely broken in IE: #18719
Closing this issue.