case RTL in grid, the last row is not sorting properly

[habhabsafi]

i need to set the container to rtl because i am working on an Arabic language website
reversing the data won't work because if the user wants to drag from bottom top in the grid
items should be pushed to the left and not to the right.
when i set the container to rtl all rows are working fine except for last row
To Reproduce
Steps to reproduce the behavior:

1. Go to http://sortablejs.github.io/Sortable/#thresholds
2. Right Click on Grid Example Container
3. inspect and add direction:rtl to grid
4. all rows are working properly except for last one

Expected behavior

last row should work properly

Information

Versions :
vue.js latest
vue-draggable latest

[waynevanson]

@habhabsafi Looks like because the length of the container doesn't fill up the row, Sortable has trouble sorting it.