A roman numbered list copied from MS Word appears as a mixture of unordered and ordered lists.

Open word, create a numbered list with five items and set the styles to roman numbers. It should look like this in Word:

i.   One
ii.  Two
iii. Three
iv.  Four
v.   Five

Select the text and paste it to TinyMCE (with paste plugin and paste_convert_word_fake_lists enabled). You'll see this in TinyMCE:

1. One
2. Two

o  Three

1. Four
2. Five

This would be the correct outuput:

1. One
2. Two
3. Three
4. Four
5. Five

The error is in lines 43 & 44 of WordFilter.ts. The code fails to detect roman numbers that use more than two letters, such as III, VII, VIII or XII.

I'll submit a pull request to fix the issue. The bug must be old one, as it was previously reported in May 2016 as #2933.