I use Notepad++ (which uses Scintilla) on Windows 10. Folks at the Notepad++ bug tracker suggested I report this bug here.
In .asp files, comments are not properly terminated if the ASP end tag "%>" is on the same line.
For example, this works fine:
<%
'this is an ASP comment
%>
<p>This is HTML.</p>
...but this breaks:
<% 'this is an ASP comment %>
<p>Oops! Notepad++ still thinks we're inside an ASP comment!</p>
Appears to be a duplicate of [#650].
Related
Bugs:
#650