[gui/widgets] Fix placement bugs

3 jobs from master in 12 minutes and 47 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #156297
docker
build_linux_36

00:11:30

passed #156298
macosx
build_macosx_36

00:08:16

 
  Deploy
passed #156299
docker
deploy_beta

00:01:17