So called "new" interface completely unusable

Please define the minimum requirements to use the new editor, and add to the documentation for translators, if not already done.

Point number 5 on opening more than one tab at once (by 'right click, open in a new tab') is quite important. I use this to copy text from one message to another and also to open similar messages in the list of 'translation suggestions'. But maybe fixing bug 46955 might help with that.