Make sure `mask_size` is calculated correctly in `UI_view2d_view_to_region_rcti_clip` since the rcti is inclusive and the size functions do not take this into consideration. This function is only used from NLA and VSE drawing code.
Make sure `mask_size` is calculated correctly in `UI_view2d_view_to_region_rcti_clip` since the rcti is inclusive and the size functions do not take this into consideration. This function is only used from NLA and VSE drawing code.