[Libreoffice-bugs] [Bug 119794] New: Formula objects cut off vector arrows

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=119794

            Bug ID: 119794
           Summary: Formula objects cut off vector arrows
           Product: LibreOffice
           Version: 5.1.6.2 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: dmhymers at hotmail.com

Description:
The vector arrow placed over elements in the formula editor renders outside the
border of the formula when shown in Writer. This issue occurs for arrows
produced by both 'vec' and 'widevec', but does not apply to other modifiers
drawn above characters, such as 'bar' and 'hat'. Including 'bar' or 'hat' in
the same line, or extending the height of the formula by other means, reveals
that the vector arrows are drawn, but are cut off by the bounds of the
rendering window.

Vector arrows are visible while the equation editor is open, but are not
rendered properly once the editor is closed and editing the document resumes.
They are also not printed properly, or exported properly to PDF.

A similar bug appears if a vector arrow is placed above an element in the
denominator of a fraction expression; the arrow overlaps the horizontal
dividing line. In this case, the arrow is also not visible while the equation
editor is open.

It seems that the vector arrow may not be marked as having height, so it does
not move the formula border or other elements, such that it can be drawn
unobscured. 

Steps to Reproduce:
1. Open formula editor in a new blank document
2. Enter the formula "vec E = - vec nabla V"
3. Close the formula editor

Actual Results:
Vector arrows above E and nabla are not visible. It is evident that some accent
is present above E, but the nature of the accent is not apparent.

Expected Results:
Vector arrows above E and nabla are rendered within the object.


Reproducible: Always


User Profile Reset: Yes



Additional Info:
Version: 5.1.6.2
Build ID: 1:5.1.6~rc2-0ubuntu1~xenial4
CPU Threads: 4; OS Version: Linux 4.15; UI Render: default; 
Locale: en-CA (en_CA.UTF-8); Calc: group

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