shader makes outline display different (wrong)

(Samsung Galaxy Watch5)
When a gradient shader is applied to a time text (numbers) together with an outlined text effect and the watch's back button or home button is pushed after the watch was asleep the text is displayed wrong. The text is then smaller than the outline so that it looks similar to a shifted drop shadow. Only when the minute switches one step further the display of the text is proper again.
Can you pleeeze fix that?