[Libreoffice-bugs] [Bug 137127] New: RTF: Control word \up14 in blank table cell leaks into adjacent cell

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=137127

            Bug ID: 137127
           Summary: RTF: Control word \up14 in blank table cell leaks into
                    adjacent cell
           Product: LibreOffice
           Version: 7.0.1.2 release
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: mikem at fenestrae.com

Created attachment 165947
  --> https://bugs.documentfoundation.org/attachment.cgi?id=165947&action=edit
Two RTF documents demonstrating the issue and a workaround

As I understand it, the \upN control word should only apply within its own
bracket-delimited group, but it seems that LibreOffice allows it to leak into
the next group under some conditions.  The effect persists until the next group
ends.

I have attached a pruned document (Broken.rtf) from a customer that
demonstrates the bug, and my modified document (Fixed.rtf) where I simply
deleted the \up14 word.  The problem is visible around the "Standardpreis AZV"
text.  If you click on it, LibreOffice identifies it as a Superscript.  I think
this pushes the rest of the text down, so it no longer fits in the cell.

The group causing the problem looks like this:
{\rtlch\fcs1 \af0\afs20 \ltrch\fcs0
\fs20\up14\lang1031\langfe1033\loch\af0\hich\af0\dbch\af31505\langnp1031\insrsid3419495
\cell }

The problem has been seen on Windows 8.1, Windows Server 2008 R2, and Windows
Server 2012 R2.  I have reproduced it with three LibreOffice versions 6.1.2.1,
6.4.6.2, and 7.0.1.2.

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