Straight line connectors - Arrows flip and disappear when the connector is vertical

Franklinjagan / jsplumb

Automatically exported from code.google.com/p/jsplumb

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What steps will reproduce the problem? 1. Create three items 2. Using a straight line connector, connect item 2 to 1 and 2 to 3 3. Move the items around until the lines are completely vertical. The line from 2->1, the arrow will disappear. The line from 2->3, the arrow will reverse direction. What version of the product are you using? On what browser and OS? 1.2.6 RC | Chrome 10.x, Ubuntu Please provide any additional information below. See the attached screen shots.

Not sure whether this is related: label is now shown and a Console error is 
generated when a straight line connector is vertical. I do not use arrows, but 
I do use a text label.
The Console log shows:

 An invalid or illegal string was specified" code: "12
 ctx.fillRect(minx, miny, td.width, td.height) );

(exactly like this, including weird spacing and punctuation).
I did some debugging, and the function mentioned in the Console log appears in 
the draw method of jsPlumb.Overlays.Label. The error occurs because miny is NaN 
at that point. I know too little of the code to attempt a fix.

I am using the 1.2.6RC1 version retrieved from SVN just now. This also happens 
with 1.2.5.

Original comment by eel...@xs4all.nl on 6 May 2011 at 8:29

Franklinjagan / jsplumb

Straight line connectors - Arrows flip and disappear when the connector is vertical #76