Incident Report Continued...

Hi Takayuki,
ライブラリバグではなくて、私のライブラリ使用の仕方に問題があったようです。
Syncfusion社さま、ごめんなさい。

１２３Aで修正しました。

Thanks for your patience.
We maintain the maximum limit of interior functions as 100 by default. The reported issue occurs when the limit exceeds the default value. This can be avoided by assigning some high value for [a:https://help.syncfusion.com/cr/cref_files/windowsforms/Syncfusion.Calculate.Base~Syncfusion.Calculate.CalcEngine~MaximumRecursiveCalls.html]MaximumRecursiveCalls property of CalcEngine. Please find the code snippet below.
Code snippet:

//To increase the maximum limit for interior functions
worksheet.CalcEngine.MaximumRecursiveCalls = 1000;
Please look into the following link to know more about limitations in CalcEngine.
Help Link: https://help.syncfusion.com/windowsforms/calculate/performance

P.S.
私事ですが、身内に不幸がありしばらくお休みします。