Brave WINDOW crashes whenever a filedialog is called for

[rew]

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Brave crashes whenever a file dialog opens

Description of the issue: The browser crashes whenever a file dialog opens. It might be trying to save a page or trying to upload a file. I’ve recorded a short video demonstrating the issue. I could only attach this very file because the forum supports dragging and dropping the attachments. This is not always the case. There seems to be a similar topic/issue here. The other issue is on windows and it got stale. How can this issue be reproduced? Run browser (/usr/bin/brave-browser-stable) …

for me. and the automatic: Sounds similar to suggested:

Dialog box causes browser to hang

I’m running Brave Version 0.61.52 Chromium: 73.0.3683.86 (Official Build) (64-bit) on a fully patched W10x64 machine. Only have two plug-ins loaded (LastPass & Currently) Brave consistently hangs when a dialog box needs to open (e.g. file save), with no dialog box visible. Is it a known issue? (I didn’t see it in ‘known issues’), or am I failing to do something correctly?

Anyway… I now have the same issue. Release Notes v1.82.170 (Sep 18, 2025)

I usually have two windows open, and it seems to be the WINDOW that crashes/freezes.

I noticed it when attaching a document to a (web-) whatsapp message, but saving a PDF that is currently viewing or print→save-as-pdf have the same effect.

My other window is currently “crashed” while I’m using my other window to report this.

Description of the issue:
How can this issue be reproduced?

1. Do anything that requires a file dialog.

Expected result:

to be able to select a file to load or save-as.

Brave Version( check About Brave):

Brave 1.82.170 (Official Build) (64-bit)
Chromium: 140.0.7339.186
Additional Information:

I’m on ubuntu Linux, my homedir is stored via NFS on the fileserver. I thought the network was slow or something like that. But no, completely crashed even 30 minutes later.

Oh another thing that might be a hint… The partially rendered file-dialog that I got the first time (now it crashes before that), remained visible after killing brave! My window manager’s (sawfish) “kill window” worked.

Update: Weird: Firefox seems to have similar behavior, except that it crashes the tab and not the window. And: the “test” test-document from the linked thread was found .org.chromium.Chromium.0GbYeA (and a PDF in a similar named file). UPDATE: The Firefox observation pointed at something on my system. So I decided to reboot the system and I can down- and upload files again.

[rew]

Case closed: it was something on my system.

[rew]

Case not closed: It worked for a short while after the reboot, but reappeared shortly after.

So question for the technical people: What does brave do “per window” that firefox does “per tab” ?

(I just crashed one window while I had a big bunch of unsaved data…. luckily in another window! But “too close for comfort” )

A hint: The window that crashed a couple of hours ago was the one that had the tab “web whatsapp”. The messages and notifications still work. But switching to the tab doesn’t.

[rew]

I seem to have fixed it…. My Downloads directory had about 760 files in there. I cleaned it up by moving everything to Downloads/old . Now it no longer crashes…

My gut feeling says: That’s not good news. This might be a buffer overrun. (difficult to trigger remotely, even more difficult to exploit, but still.)