After re-reading a few times I think I know what this is.
They did some changes to the Market. Now, instead of reloading the Market after every single trade, it all caches the goods and removes them from the Market without having to reload.
This makes the Market a bit faster, however, the way the Market works has not been changed, which is as follows:
When you accept a trade, the Market (for some reason) re-arranges the goods. So if you want to trade Offer #1, 2 and 3, it sometimes happens that after accepting #1 that #2 and 3 suddenly are in different spots. This has always been like that, but now that the Market doesn't load after every trade anymore this is much more noticable.
Just check the different pages for the Trade you were looking for and/or use the goods filters.
If that does not answer your problem, then use the
Bug Report Template.
If the above explanation does not answer your problem and you refuse to use the Template, then this issue will be closed and archived in a few days, despite of an answer or not.
- L