Problem: Undo test is flaky. Solution: Apply filter and change time to "1 second ago" in both dumps. closes: #12771 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Problem: Undo misbehaves when writing from an insert mode mapping. Solution: Sync undo when writing. (closes #11674)