Acquiring lvl21/23quality transfigured gem is hard

In previous leagues, I bought lvl 21 corrupted gems and upgrade them to transfigured version easily in Uber lab. Sometimes, the resulted gems are not the transfigured ones I want, but I'm okay with it.

This league, when I finally got a lvl21/23quality gem(from incursion temple) and tried to transfigure it in lab, I was told that the gem was already corrupted.

In 3.27, they fixed a bug where corrupted gems could be used for any Divine Font crafts.

When they introduced Transfigured gems, they also gave the Labyrinth accessed via a Dedication to the Goddess two special crafting options that only apply to corrupted gems. These were the only crafts that were intended to work on corrupt gems.