I made this years ago.
It has been requested several times.
SmileyFAAce Buff and ShortDurationBuff window.
Hold ALT hovering over it and labels appear.
Grab area is slightly on the left of the buff icons.
These are two separate files, Buff and Short buff window can be moved separately.
EDIT: Almost forgot. The ShortDurationbuff (Song) window is already configured to show 30 slots. Just (double click) open the " EQUI_ShortDurationBuffWindow " Scroll all the way down the bottom, then scroll back up to you see:
<CY>341</CY> Change 341 to 512
<!-- 15 buffs change to <CY>256</CY> -->
<!-- 20 buffs change to <CY>341</CY> -->
<!-- 25 buffs change to <CY>427</CY> -->
<!-- 30 buffs change to <CY>512</CY> -->
Close the window after you change 341 to 512. Done.