When saving into MS Excel format, the secondary axis and its label that are added to charts are missing. Saving into ODS format will include the added secondary axis and label though.
Steps to Reproduce:
1. Add a Secondary axis and label to a chart.
2. Save to .xlsx format.
3. Open the .xlsx file.
The secondary axis and the label will be missing in the saved .xlsx format.
The added secondary axis and label must remain even after saving into a .xlsx format.
User Profile Reset: No
Couldn't find a fix for this issue on the Help - About LibreOffice.
Please attach .ods file for test. Thank you.
Created attachment 181428 [details]
Confirm with Version: 126.96.36.199.alpha0+ / LibreOffice Community
Build ID: 28daee8a3252e03a67484dc8d3dd26fd73af4826
CPU threads: 4; OS: Linux 5.13; UI render: default; VCL: gtk3
Locale: cs-CZ (cs_CZ.UTF-8); UI: en-US
and Version 188.8.131.52.alpha0+ (Build ID: efca6f15609322f62a35619619a6d5fe5c9bd5a)