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