Lots of people on IT uses large width monitors, and before the new UI was possible to really take advantage of it on test set, considering number of columns and wide data.

After the new UI the test set displays on the middle of my monitor, with two giant empty blocks on the sizes (left and right), and now my columns are smaller and I'm no longer able to read all my information. It got worse! Very bad!

Please, please, fix that ASAP!