... otherwise it assumes that only part of first string to the right of the
unchanged string part needs redrawing (which would be to the right of the
control itself)
Change-Id: I2833c1eb2026041b11d0b72431b164d2ee3befef
Reviewed-on: https://gerrit.libreoffice.org/84207
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>