It has worked for me once but I wasn't able to reproduce it.
So, "Replace All" should work if you have less than 15 search results, but currently won't work if there are at least 15 search results.
I'm using a bluetooth keyboard. If on the first line of a document I cursor-key upwards, the cursor does not move (naturally) and the displayed line number stays as one, as expected. However, it appears to count however many lines before the start I up-arrow to, since if I di it 7 times, I then need to press 'down' 7 times before the cursor starts moving again!
This will be fixed in the next update
Customer support service by UserEcho