Created attachment 171140 [details] Test file for creaton of an epub exported file followed by screen shots for 3 validators analysis.. Exporting to .epub format does not pass validation tests. The errors look minor, but the result renders the .epub output file unacceptable to many of the major e-book vendors. One reason the bug is severe is that the validators often describe problems in a form that only the converter-writer could comprehend (see the last example in the attachment, for example). The first attached file shows the test code. The second one shows the results of three of validators' analyses. The second attachment starts with the test file text and a description of how the .epub file was created. This is followed by the name or URL of each validator and a screenshot of the resulting analysis.
Also in Version: 7.1.4.2 / LibreOffice Community Build ID: a529a4fab45b75fefc5b6226684193eb000654f6 CPU threads: 8; OS: Mac OS X 10.16; UI render: default; VCL: osx Locale: en-GB (en_GB.UTF-8); UI: en-US Calc: threaded
*** This bug has been marked as a duplicate of bug 144778 ***