If I double-click a word, drag my mouse down to the next line, and then return my mouse to its original position, I’m selecting the word I double-clicked, as it should be. But if I double-click, then drag up to the previous line, then back to where I started, I find that my double-click selection has expanded to the left. See this GIF:
This is with --safe enabled. Possibly related to this.
I think this is a combination of two different problems.
First, double-click drag-select (DCDS) doesn’t understand the grammar of HTML, so it’s misunderstanding which characters are word separators. In the following example, it treats .</ as a single word.
Second, DCDS’s behavior changes depending on cursor movement. It can lose its dedication to selecting whole words instead of just characters. Example:
Somehow the behavior described here is not working anymore. When I move my mouse cursor slowly like in the second example by @DawnPaladin, it won’t select single characters.
I’m not able to reproduce that anymore either. I guess that’s fixed! 
The problem in the original post is fixed too!
I am still seeing the second problem I reported. .</ still gets treated as a single word.
