In the selection of subtitle lines, the ctr and shift keys have changed their assignments. When moving subtitle lines, the selection is reset. (But this may all be due to my system)
Oh, sorry, I did not notice the red circles in the screenshot at the time I wrote this. I thought he was comparing the Export frames/sec (59.940060) with that of the Video Mode menu (59.94).
The fourth option itself was called “Source” (Источник). I didn’t click it and see what it was, I don’t really understand those options, I only used it once according to the instructions.
When you load into an existing save and have not loaded anything into the Source viewer, you will not see an option for Source in the export drop-down menu. This is not a bug.