When user's data contains double byte characters like Thai, Hebrew, Chinese, Japanese, etc, those characters may display as blank in Visual Insight. Same characters works fine in reports/Report Service documents.
Visual Insight can display double byte characters normally when user change Strategy web language setting. But sometimes when user manually change the data in warehouse but does not change Strategy web language setting, the issue occurs.
Go to Strategy web preference setting > report services > embed font in visual insight mode, and select off.
