Hi,
I found this bug recently (I don't know why it happens now, maybe browser update)
Concerned feature :
Using the search/replaceAll feature.
Description :
the replaceAll crashs when some searched text are founded in multiple pages, and this happens : 
the getHierarchicalIndex function bugs a containerWidget of a node seems undefined
How to reproduce:
You can reproduce it by using the sfdt file I share with this post by trying to replaceAll "[qualification_huissier]" in the document.
Work around:
For people having this bug, you can avoid it this way:
you have to set the layoutType of the documenteditor to "Continuous" before using the search and replace
Then switching back the layoutType to "Pages" once the replace is done.
Attachment:
sample_replaceAll_50acfe69.zip