Checkbox in last row doesn't work in Chrome and Safari

I’m using dhtmlxGrid_v36_pro_130416. In Chrome and Safari (on Mac OSX at least - I haven’t tried other OS’s), I can’t check or uncheck the checkbox in the last row of a datatable. It seems to have to do with the horizontal scroll bar being in the way, but I’m not sure; Firefox and Opera handle their scrollbars differently, and those two work fine. To see an example:

Unfortunately the issue cannot be reproduced locally.
Couldn’t you clarify the version of OS and browser.

I’m using Mac OSX 10.8.3
I’m running Chrome version 26.0.1410.65
I’m running Safari version 6.0.4 (8536.29.13)

Again, the problem appears to be that Chrome and Safari hide their scrollbars when they’re not being used, and those scrollbars overlay the content of the grid. Firefox and Opera show their scrollbars all the time, and those scrollbars are outside the content of the grid.

A fix for this problem would be greatly appreciated!

the issue is confirmed.
We’re working on it.