(05-11-2020, 10:40 AM)Patrix Wrote: Yes I knew about Drop Shadow but it doesn't render the same effect at all...
To obtain the desired result with Drop Shadow, you need to apply the filter on a layer containing the text part only.
From your image,
1) duplicate the layer
2) Colors > Color to Alpha (and pick the yellow color)
3) Drop Shadow
Make the text layer then menu Layer -> Text to Path (1) That gives a path as (2) Toggle path visibility on/off with the little eye icon in the paths dock.
Add a new transparent layer under the text layer (3) choose a suitable brush (4) and brush size (5)
Then Edit -> Stroke Path and stroke with a paint tool "Paintbrush" Click on Stroke button.
Gives a slightly fuzzy outline with rounded corners using whatever foreground colour is set. (6)