My webapp (standalone, running on Ubuntu 14.04, compiled with Xojo 2016r1.1, over https) runs fine under Safari and Google chrome. With Firefox (v.47 or any other version) however it is dog slow. Pulling a recordset from Postgres, displaying it in a weblistbox (setting some cells styles) and finally tucking some small objects into row tags takes a second with Safari and more than 10 with Firefox. Usually the “a script has stopped working”-dialog pops up (which I can click away and the page will eventually load).
Some debugging revealed that the actual code does in fact execute fast under Firefox as well, but once it is finished (verified that by hitting step into in the debugger and no more code was displayed) Firefox “hangs” (displays pizza) for quite some time before it finally displays the page.
Am I the only one seeing this? What could be causing this?