The example below is self-explanatory. Obviously this DSR breakage then breaks selser.
Consider this wikitext:
<translate> <!--T:1--> '''The quick brown fox jumps over the lazy dog.''' </translate> [[Category:Foo]]
See output below and look at the DSR range for the p-tag. The DSR values are correct after the DSR pass completes but incorrect after the WrapAnnotations pass completes where the meta tag is hoisted out of the p-wrapper.
[subbu@earth:~/work/wmf/parsoid] php bin/parse.php --domain meta.wikimedia.org --dump dom:post-dsr < /tmp/wt
----- DOM: post-dsr -----
<body data-parsoid='{"tmp":null,"dsr":[0,105,0,0]}'><meta typeof="mw:Annotation/translate" data-parsoid='{"tmp":{"tagId":1,"bits":0},"tsr":[0,11],"dsr":[0,11,null,null]}'/>
<!--T:1-->
<p data-parsoid='{"tmp":{"tagId":3,"bits":0},"dsr":[23,86,0,0]}'><b data-parsoid='{"tmp":{"tagId":4,"bits":0},"tsr":[23,26],"dsr":[23,73,3,3]}'>The quick brown fox jumps over the lazy dog.</b>
<meta typeof="mw:Annotation/translate/End" data-parsoid='{"tmp":{"tagId":5,"bits":0},"tsr":[74,86],"dsr":[74,86,null,null]}'/></p>
<link rel="mw:PageProp/Category" href="./Category:Foo" data-parsoid='{"tmp":{"tagId":7,"bits":0},"tsr":[88,104],"stx":"simple","a":{"href":"./Category:Foo"},"sa":{"href":"Category:Foo"},"dsr":[88,104,null,null]}'/>
</body>
-------------------------
<meta typeof="mw:Annotation/translate" data-parsoid='{"dsr":[0,11,null,null]}' data-mw='{"rangeId":"mwa0","extendedRange":false,"wtOffsets":[0,11]}'/>
<!--T:1-->
<p data-parsoid='{"dsr":[23,117,0,0]}'><b data-parsoid='{"dsr":[23,73,3,3]}'>The quick brown fox jumps over the lazy dog.</b></p>
<meta typeof="mw:Annotation/translate/End" data-parsoid='{"dsr":[74,86,null,null]}' data-mw='{"wtOffsets":[74,86]}'/>
<link rel="mw:PageProp/Category" href="./Category:Foo" data-parsoid='{"stx":"simple","a":{"href":"./Category:Foo"},"sa":{"href":"Category:Foo"},"dsr":[88,104,null,null]}'/>