Steps to Reproduce:
Go into visual editing mode. Find a displayed line which is wrapped with a punctuation mark (period, comma, etc.) at the end of the line _and_ is the longest line in the display, so that the punctuation mark is the right-most displayed character (sticks out). Narrow the window very slowly and the punctuation mark wraps to the next line all by itself.

Actual Results

Punctuation mark wraps to new line all by itself.

Expected Results:

Punctuation mark is "attached" to the word it follows so they always wrap to a new line together. Sort of like a non-breaking-space.

Note:

This problem does not happen in normal display mode, just in visual editing mode.

I discovered this because I would see lines missing punctuation, but then realize that it had been wrapped to the next line.