Bug in vertical zoom

I noticed a strange behaviour in WL8 which, I think, is a bug:

If I zoom in vertically stepwise (my shortcut is shift+G, I think it had been shift+H by default) and then select to reset to 1:1, then subsequent vertical zoom in does not continue from the 1:1 position but from the vertical zoom used before the 1:1 reset.
It took me some time to find out the pattern behind the bug and I can’t see any good reason for such a behaviour.
It would be great if this could be fixed in the next update/version.

Thanks for the report, this will be corrected.