Comment 3 for bug 1707931

Issue #1 fixed on 3.14 and 3.15 with 619a99bf997984fa067a33551a86b1ea8282bd15 and 3.16 an additional send_err() call by 0205dcc61f5b48d97bf0b31052b110f9e2c4a702

Issue #2 is "fixed" on 3.14 by 5c8e5c52ef80ee02e59be2bd9a324532d2b7fe0e which takes effect when merged into 3.15 by 111cac8e47f78a067bbcb35e50f7b01fe2c818ab