Fix Truncated Text In Excel

I’m working in Excel 2016 and every time I type a long string into a cell the text simply stops midway through entry—as if there’s an invisible character limit. The full value never makes it into the sheet, so nothing I do with column width, wrap-text, or formatting helps because the content is missing from the start.

I need you to identify the exact cause and give me a reliable fix I can apply on this workbook and any future files. A quick screenshare or clear, illustrated steps are both fine; what matters is that after your solution I can enter unlimited-length text without it being truncated.

Please test your approach on an Excel 2016 installation before handing it over, and include any settings tweaks, VBA snippets, or workbook-level adjustments you use so I can replicate them later.