Kile dialogs extremely slow and unusable

[Eero Aaltonen]

Opening dialogs from Kile, such as
- "Save as"
- "Open file"

are horribly slow. "Open file" did render eventually, but did not respond to input. This is on Unity desktop.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: kile 4:2.1.3-3ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-138.164-generic 4.4.155
Uname: Linux 4.4.0-138-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Nov 8 19:45:59 2018
InstallationDate: Installed on 2014-09-24 (1506 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: kile
UpgradeStatus: Upgraded to xenial on 2017-02-08 (638 days ago)