Unable to configure partitions during installation

[Rainnova]

Hi there, I can't configure partition during installation. Whenever I want to select a partition, the partition configuration dialog appears behind the partition selection big window (which weirdly always stay on top all the time). Even when I launched GParted, it also stays behind the partition selection window. GParted is an app itself, so its windows can be moved around to the corner of my screen for me to have clear view of it. However, the partition configuration dialog cannot be moved round and always stay shadowed behind the main partition selection screen. This effectively renders it impossible for me to configure any partition to be installed on.

[ryonakano]

Closing as duplicate of #917. Sorry for inconvenience.