An issue QChart callout example: callout tooltip box overshadowed by a white rectangle



  • While replicating the qchart callout example (http://doc.qt.io/qt-5/qtcharts-callout-example.html), I have noticed a white rectangle overshadowing the tooltip box. The difference between the example and the replica is the lineseries input (a sql query). What would be the likely causes?

    0_1484281789722_calloutablelinechart.png

    A sample sql query output:
    min | bid_vwap
    ---------------------+------------------------
    2010-07-01 00:00:00 | 0.84670294117647058824


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