A DESCRIPTION OF THE PROBLEM :
When I try offical fxml example of javafx_scenebuilder_samples-1_1, I open IssueTracking.xml with scenebuilder and find the textarea blurry.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
I try to modify the .roundedAnchorPane css and find -fx-border-width is the reason product the issue.I try three cases. One, I delete the -fx-border-width problem ,and the problem don't appear. Two, I modify the value of -fx-border-width to 0.2em or 0.4em 0.6em ... 1.2em , the problem don't appear,but if the value is 0.1em 0.3 em and so on , the problem appear. Three, I try value 0.21em 0.211 0.22em 0.23em and so on, when the value Over two decimal places , the problem appear.


CUSTOMER SUBMITTED WORKAROUND :
So the useful ways are deleting the -fx-border-width property or set the value of the property to multiple of 0.2em.