[TYPO3] EXT fdfx_3cols makes computer stop responding

[tapio]

Almir Orle wrote:
> Hi all!
> 
> I'm useing extension fdfx_3cols version 2.1.0 on Typo3 3.8.0. When I make change in 3 columns and click on save & show and FE is shown, so far so good. But without closing FE window I'm going back to BE by clicking on RTE area makes all my 5 computers stop responding. It only happends when I use 3 columns on my page.
> 

If you think it's bug contact to the author - I believe that
he is willingly to fix it.