I'm having the issue of getting just white screen while editing the power query steps and it's happning with both Excel and Power BI in a random manner. I couldn't really understand why it's happening but it is causing a lot of rework and it's clearly a bug in Power Query interface.
If I'm lucky, sometimes I press "Esc" and close the white screen. Yet, this doesn't work all the time. Also, even if it goes for that step, it continues when I click to the settings of other steps as well until I close the power query window. You can see the screenshot below. (I've hidden the content part with black, please ignore the black areas)
I've searched but couldn't find a similar issue, so I'm posting here.
Power BI Desktop Version : Version: 2.123.742.0 64-bit (November 2023)