Well. The cookies where a pain in the making and didn't turn out well. :o[ The options where I may have failed:
I used less sugar. Because all the recipes always turn out very, very sweet for my taste, and for that of all my colleagues. I started to mostly use less sugar than asked for. This time, I maybe went too far.
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But, after chilling the dough for 2 hours (much longer than most other bakers recommended), it was still a soft, smooth dough. So I had no problem to scoop and form it, but: despite the softness, my balls didn't really stick together.
Somehow I managed to roll balls and press them softly (see again the hints from other bakers) on the baking sheet. But: After about 8 minutes, not a single ball had spread. They remained in their shape. That's not what a cookie should look like! I took a spatula and pressed them flat. That was about the moment when I thought: What a mess. Nothing did work properly today. Nothing. I had to fudge on these cookies in every step.
At least, in the end they looked like cookies should in my world. But the first bite from a still slightly-warm cookie: disappointment. Sometimes cookies seem to absorb some taste from the cookie-scented air in the kitchen while cooling. So, let's wait and taste again later. --- Later: No difference. The cookies taste bland and boring. Not sweet at all. No good not-sweet-at-all like shortbread, just ... flavourless. Don't ask me. No idea how I managed to mess so completely up with them.
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Interestinlgy, they really look much better than they taste. And: I tried them with orange marmelade and this is really a winner-combination! So, a mess in between, a dissappointment for the plain cookies, but in the end I can close with a slightly positive balance sheet.