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

  • While replicating the qchart callout example (, 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?


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

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