/flattered!
You might want to double-check the "Style" for the "Bags" button; I bet something got lost when you copied and pasted the button element -- I run into this behavior
all the time.
The value should look like this instead of whatever's there:
/CommonElements.PushButton.data.style
(The main reason I removed it from my mod was because I use "B" to open all my bags, and therefore had no need for it.
)