Hello Kie,
Thank you for reporting this issue, and I'm sorry for the confusion it is causing you! We're aware of the problem and are planning to address it, but I don't have a timetable for when the issue will be fixed. In the meantime, you can recover the proper highlighting by simply refreshing the browser page.
I hope this is helpful. If you have any further questions, please reply to gen...@soe.ucsc.edu or genome...@soe.ucsc.edu. Questions sent to those addresses will be archived in publicly-accessible forums for the benefit of other users. If your question contains sensitive data, you may send it instead to genom...@soe.ucsc.edu.
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Jonathan Casper
UCSC Genome Bioinformatics Group
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