Folding: handling newlines at the start of closed folds

Here is the example text folded using explicit folding:
1| //{{{
2| Folding
3| Test
4| Case
5| //}}}
6| Other text

which folds to:
1| //{{{ [4 lines]
6| Other text

By placing the caret after the last brace and pressing
return we get the
following result:
1| //{{{
2| New text entered
7| Other text

In the editor the fold is now showen as unfolded, but the
text within the fold is not displayed. To display the
contents of the fold you have to close the fold and open
it again which then would display the expected text:
1| //{{{
2| New text entered
3| Folding
4| Test
5| Case
6| //}}}
7| Other text

This error appears to exist with any folding plugin, not
just explicit folding. Secondly, with explict folding only,
placing the caret between the braces that make up the
start of the fold whilst folded and pressing return causes
the fold to be 'lost'. As in the space taken up by the fold
is still indicated by jEdit but the fold is no longer
displayed:
1| //{{
2| ^{
7| Other text

There are three ways to get the fold back.
1) Delete the new line and whitespace entered.
This returns the fold in a closed position

2) Add new braces to complete the fold marker.
This adds the fold in an open position but without the
origenal text displayed. Closing and reopening the fold
corrects this, the same as the first bug.

3) Reopen the file

KeeperOfTheSoul <ex@dynafus.com>