Entering an SQL statement with extended characters, and selecting a blank line in Execute SQL tab confuses what SQL is executed #2311

Details for the issue

What did you do?

Executed a highlighted statement in the Execute SQL tab.

What did you expect to see?

The executed SQL executed.

What did you see instead?

An error where additional text was executed, creating an invalid query.

Useful extra information

Here is a screencast.
http://somup.com/cY1v11QgR1

So my SQL tab contained a number of different SQL statements, and I could select the one I wanted via highlighting, and pressing F5. This worked, but if an extra line was selected, then some characters were 'stolen' from the line following the highlighted section.
I assume this is due to CRLF / CR / LF line count issues.

Edit: OK, I just tried this is a nightly, and it worked. Tried it in a new tab, and it worked. It was the query which was causing it. If you copy the text from #2310, it was the Korean text in the middle of the queries, throwing it out. Unsure why - I guess extended characters counts as multiple characters, throwing out the counts?
Query: insert into keyValues (section,key) values ('Korean','한국어');

So, a bit of an edge case, but I'm sure it'll bite someone at some point, so in the meantime (if not easy to fix) do we add a 'known issue' Wiki entry?

The info below often helps, please fill it out if you're able to. :)

What operating system are you using?

• Windows: ( _version:_10 ___ )
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What is your DB4S version?

• 3.12.0
• 3.11.x
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Did you also

• Try out the latest nightly version: https://github.com/sqlitebrowser/sqlitebrowser#nightly-builds
• Search for an existing similar issue: https://github.com/sqlitebrowser/sqlitebrowser/issues?utf8=%E2%9C%93&q=is%3Aissue%20