Created Unassigned: Multithreading- AdjustToContents not threadsafe [9348]

Hi,

I have recently upgraded from 0.65 to 0.73 and while I have seen some performance improvements, several reports that run in parallel threads crashed in my UAT environment. It seems the problem is in the AdjustToContents() method.

The full exception is:

---> System.InvalidOperationException: Object is currently in use elsewhere.
at System.Drawing.Graphics.MeasureString(String text, Font font, SizeF layoutArea, StringFormat stringFormat)
at System.Drawing.Graphics.MeasureString(String text, Font font, Int32 width, StringFormat format)
at ClosedXML.Excel.FontBaseExtensions.GetWidth(IXLFontBase fontBase, String text, Dictionary`2 fontCache)
at ClosedXML.Excel.XLColumn.AdjustToContents(Int32 startRow, Int32 endRow, Double minWidth, Double maxWidth)
at ClosedXML.Excel.XLColumns.<AdjustToContents>b__8(XLColumn c)
at System.Collections.Generic.List`1.ForEach(Action`1 action)
at ClosedXML.Excel.XLColumns.AdjustToContents()