I find it inconsistent the way some form ids are named. For example, we have post_node_form for Post content type nodes and comment_node_post_form for its comments. Should've they been named either:
post_node_form
comment_post_node_form
or
node_post_form
comment_node_post_form
Haven't checked how Drupal forms' ids named, but most probably we inherited this mess from Drupal. It's really minor nuance that could be ignored, but then maybe consensus says we should correct it?
Recent comments
Thanks, the /tmp folder was the problem. I moved it elsewhere and then the updated worked. Thanks again!
Update 1.35.1 appears to install but hasn't
Probably not the reason, but worth to do a quick check: Sometimes the update cache interferes, so if something's odd with updates - some module (or core) claims to have updated, but then...
Update 1.35.1 appears to install but hasn't
Nope, not touched any permissions!
Update 1.35.1 appears to install but hasn't