fixed_columns causes issues with header alignment and overflowx #953

I'm attempting to generate a datatable with two fixed_columns and one fixed_row (header). The total number of columns requires overflowX (auto) typically so the user scrolls to see additional columns.

With fixed_columns enabled ({'headers':True,'data':2}), if I also have a header fixed_row ({'headers':True,'data':0}), then the header row is misaligned slightly:

fixed_columns enabled (see top right corner of row header):

fixed_columns disable

Additionally, if the table is several columns in length and the data overflowX's, then the behavior is incorrect if fixed_columns is enabled or disabled. With fixed_columns enabled, then the table does not adhere to it's size parameters and auto shrinks to a small size (without including 'minWidth':'100%' to the style_table, the table looks like this):

From the forums, a trick is to add 'minWidth':'100%' to the style_table, which helps with the size, however the overflowX is incorrect now. With fixed_columns enabled, the overflow scroll goes off into infinity (I think?), well past the actual size of the data columns in the table.

fixed_columns enabled ( 'minWidth':'100%' , see scroll bars on table - scrolling goes well past the table data):

fixed_columns disabled ( 'minWidth':'100%' ):