Button Group reveal its sub-buttons strangely for bootstrap style

[shrektan]

Related to https://github.com/rstudio/DT/issues/773

For the bootstrap style, a button group (like "colvis") will display its sub-buttons strangely. It looks like the button is overlapped by the table header in the first 1 or 2 seconds.

I've recorded a Gif and a test case to illustrate this clearer.

Thanks.

The test case link

http://live.datatables.net/jusukuti/1/edit

The screen Gif

[DataTables]

Thank you - I see it as well in both Firefox and Chrome. I haven' no idea what is causing that off the top of my head I'm afraid!