So.. i catch some annoying bugs in GIT version of pcmanfm/libfm and find some solution for it. May be useful for all of us.
First - i find it in Internet but wonder, why it's not applied till now. If we make right click on panels - we have a crash.
this patch fix it...
Second and third resolved by my self, so, maybe, need to be rechecked by some one, but it a so trivial "by code" - i hope it's correct
so second fix crash by sorting, if we use sort by name pcmanfm crash in some (frequent) situation.
and third fix crash if we add/remove bookmarks (and potentially in many others cases, when tree-view update acquire).
in zip archive are all files - by file names easy to understand what each of it is for.
there is two patches for libfm and one for pcmanfm
I hope developers read this forum to, and this patch be in GIT soon

UPDATE: "libfm_ordering.patch" are in GIT...
UPDATE2: all patches (and new one) now are added to SourceForge tracker...