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When multiple charts are simultaneously (i. e. in separate UI threads) added to the group (even to different ones, or if one is added and the other unloads), I get InvalidOperationException about collection being changed.
Should be easy to reproduce, but I can supply the code, if you need it.
What version are you using? In v2.x multiple UI threads can’t be done, since we are sharing control templates and binding to a static theme provider. What we’re going to do to bring back multi-threaded to SciChart is move rendering operations to a background thread, so soon, there will be no more need to have multiple dispatcher threads with SciChart
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