Free StopWatch 4.0.0.0, the clocks text does jump from left to right

Reproduction steps

• install Free StopWatch 4.0.0.0 from rapps
• start the app and start the timer clock

Expected result
the clocks text should not jump from right to left and left to right, like in
2k3sp2.webm

Observed result
the clocks text does jump from left to right
0.4.14-RC-98-gc437ff6_jiggle.webm
0.4.14-RC-98-gc437ff6_jiggle.log does not contain anything of interest, nothing is logged after starting the timer

The bug is trivial ofc and many years old already. Up to now it was just too subtle for me to file it yet. But the app did improve on ros , and this bug is the next logical bug to report against it now.