Writer crash when inserting sub-docs to master, subsequently navigator issue

LO Writer 25.2.7.x
Linux Manjaro 26.0.0 + XFCE DE
Writing work using master document and sub-docs
Using .odt’s and .ott while in edition of .odt’s.
TOC and indices still not added to master.
Also style-based writing, however only paragraph, character, page styles; custom and Writer-stock ones.
Actually I should derive my master from .ott as well, however forgot to do so this time.

Same issue I had already a year, or bit longer, ago - one of former releases was in my use as of those days.

I was on inserting documents to master document. Master document freshly created. As of time being master has only one blank paragraph. Remaining content comes from sub-documents inserted.
Master linked to about 7, or so, sub-docs at the point of time when Writer crashed Problem A

What followed is the auto-recovery interaction of LO. I let to recover all documents, what however succeeded.
Problem B Subsequently to successful auto-recovery the open navigator covers almost whole screen, that a way the manual resize to it former dimensions (rather a vertical block) is necessary. Considering the number of open documents the manual resize is cumbersome.

I appreciate if AskLO forum community can provide eventual input regarding these two issues?

EDIT
It repeatedly crashes when I reorder sub-documents in master.
Some further issue (started early stage of this writing works) is that every prompt to take over style modifications from template to current document pops up twice. I struggle if it can have something in common with crashes observed.
Following to successful recovery the damn manual resize of side bar to its former (prior to Writer crash) dimensions is damn necessary. I struggle if it may have something in common with XFCE settings. Can’t find in LO a tool for tracing crash root cause.
I also wonder why, following each crash and recovery, the sidebar gets new window width - without user to have performed any operation with this intention.

EDIT 2
deepwiki Devin trained on XFCE code base finds out that there is no XFCE4 feature that directly manages LO’s sidebar width. Its opinion has the sound that LO is likely misapplying per-window saved geometry on recovery, interacting with xfce4’s gravity workaround and session restoration.
Can LO experts / developers help here?
Writer sidebar after crash.pdf (12.0 KB)
Writer crash and sidebar issues.pdf (33.7 KB)