Just ran into this bug myself. Here's a quick python script that will reproduce it.
```
with open('ff-find-bug.htm', 'w') as f:
f.write('<pre>')
for i in range(40000): # 35k is fine, by 40k it's misaligned
f.write('x')
f.write('word to search for, plus some more text after.')
```
Bug 1764687 Comment 6 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Just ran into this bug myself. Here's a quick python script that will reproduce it.
Depending on how this bug works and your OS/font, you may have to adjust the number of Xs.
```
with open('ff-find-bug.htm', 'w') as f:
f.write('<pre>')
for i in range(40000): # 35k is fine on W10, by 40k it's misaligned
f.write('x')
f.write('word to search for, plus some more text after.')
```