Annotation Positioning - Incorrect y coordinate for varying page sizes/orientations

[axrs]

Symptom:

When writing the annotations to a PDF or blob (via save or buildDocument), the y coordinate is being resolved as the currentPage.height - y. The currentPage however is not actually the page the annotation should be on. It appears to be the last page modified.

https://github.com/MrRio/jsPDF/blob/f4fa8862a9041e0b6c5fadee45e25b45efba6be7/src/jspdf.js#L4187-L4190

Reproducing:

1. Add page (a4 Portrait [w 210, h 297])
2. Add text with url (can be at the TL corner)
3. Add another page (a4 landscape [h 297, w 210])
4. Save

The annotation will be against the left hand edge [x 0], down from the top [y 87].

My current fix (because I only have one annotation to write), is to explicitly setPage to the page with the annotation before saving.

[github-actions]

This issue is stale because it has been open 90 days with no activity. It will be closed soon. Please comment/reopen if this issue is still relevant.

[HackbrettXXX]

duplicate of #2801.