Richtext has problem when set string

Richtext has problem when set string
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#1

Hi cocos-creator team.
Sometime potision node contain richtext is change when i set string for richtext
I using cocos-creator 1.8.1


#2

What alignment option and/or width max in RichText and what anchors are you using on the node?

These options affect which direction the node grows and moves in based on length of text entered.