Recurring issue I'm experiencing with charts that are moved to a dedicated chart sheet.

 This is also happening to my students in my Excel for Agriculture courses: they send me their assignments, and while the charts look perfectly fine in older versions of Excel, in my Excel 365 I cannot see them properly.

As a test, I even opened files that were working perfectly just a week ago, and now my own charts appear exactly like the image I attached. Needless to say, these are not corrupted files, the data source is fully verified, and everything else is in order.

The only workaround I found was to insert a new regular worksheet, move the charts to that sheet (where they display correctly), and then move them again to a new chart sheet. After doing that, they look fine again, just as before.

Before anyone asks the obvious questions: I have written four Excel books and have been teaching Excel for Agriculture for 20 years, and this is the first time I’ve ever seen something like this.

I urgently need a solution. At this point, it makes no sense to keep paying for a Microsoft 365 subscription if this continues to happen.

Please, if possible, translate any replies into Spanish. Thank you!