Non-stepped keys with text off-center cause hole off-center
When a wide key is placed with off-center text (with Raw Data w2:2 (with or without x2:-1)) but without being stepped (without ,l:true), the hole is placed directly under the text, instead of the center of the key.

And it doesn't place a stabilizer.
And the link is http://www.keyboard-layout-editor.com/#/gists/0fed99bc9bbb3741940ecdc34d4775a7
And I can't edit on GitHub because they say they're doing their best to support my browser, but I don't see results.
This is because there is no w attribute, so my tool is treating it as a 1u key. the w2 creates the additional space so it takes the space of a 2u key, but without a w, there is nothing telling the builder that this is anything but a single unit key.
The gist you have linked does place a stabilizer and it also treats it as a 2u key. This is because from the first example, the w2 was changed to w for that key.
I edited the gist to work nice with the designer. I hoped you'd notice that as the text is no longer to the left but centered.
Yes, I saw that. This is a bit hard for me to support as the w and w2 have unique functionality. I could potentially check the w2 option if the w option is empty and use it as the w value. I would have to think about it though to see if there are other use cases which would break by me doing this. Given that this change is only a visual modification in KLE, I will need to review the details of the implementation in more depth to figure out what the best way to solve for this is. I will review...
I just modified the key via the via the Properties configuration in KLE, and the builder works as expected.

