in the "amplify" filter changing the value of the horizontal bar using mouse scroll the program crashes

In the "amplify" filter, changing the value of the horizontal bar using mouse scroll the program crashes if before doing that I press on "Preview".

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: audacity 2.2.1-1
ProcVersionSignature: Ubuntu 5.0.0-27.28~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-27-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 10 20:45:59 2019
InstallationDate: Installed on 2019-09-07 (3 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: audacity
UpgradeStatus: No upgrade log present (probably fresh install)