This only seems to happen for "commodity" items, like cloth, that there are many pages of.

Example, my first search for Runecloth:

And then pressing Search again immediately after the first search is finished:

aux 3.2.5 in Wrath Classic 3.4.2

I was not able to reproduce this. Could it be a conflict with another (probably auction related) addon?

I was able to reproduce it just now with v3.2.6, again in Wrath with Runecloth.

As far as I can tell, it's only happening for the first search of an item per game session. If I reload, or log out to character select and back in, searching for Runecloth returns correct results the first time. A full client restart is required to reproduce it for the same item again.

Interestingly, I can actually see the doubling happening as the results are coming in (the non-doubled results show for only a single video frame):
https://github.com/shirsig/aux-addon/assets/7716908/c9386c64-ddd2-480d-b639-b4042cfe6026

Yes, this is with zero addons enabled besides Aux. Sorry, I meant to say that in the last comment but I see I forgot.

I still cannot reproduce it. Are you sure it's not a conflict with another addon?