addCopy of original worksheet alters proportions of copied one when cells are populated

Hello all. I’m using gembox spreadhseet and I love it. However I have one issue. I use a template XLSX file which contains merged cells and formulae. When I copy the desired worksheet to a new ExcelFile object, I populate it and then I save it both as XLSX and as PDF. However when the new worksheet is populated, the proportion is altered and the result looks like the cells are “pressed” upwards and does not take on the entire sheet. I’ve tried copying the cell styles for all cells and set up the margins and print page manually. Has anyone faced this issue before ? thank you in advance, Please let me know If any further info is needed.

Hi! Please send a small Visual Studio project that reproduces this so that we can investigate it.