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#1 2026-04-10 20:01:29

navigat0r
Member
Registered: 2013-02-13
Posts: 162

Quick View hangs

Greetings,

Steps to reproduce:

1. Activate Quick View (Ctrl+Q)
2. Select a virtual hard disk (.vhdx)

Just Manager hangs:
2026-04-10-21h43-30.png

High CPU usage:
2026-04-10-21h49-20.png

FC has no issues:
2026-04-10-21h52-50.png

Cheers


Win10/11

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#2 2026-04-10 20:29:18

navigat0r
Member
Registered: 2013-02-13
Posts: 162

Re: Quick View hangs

There is another issue with Quick viewer. After changing the max file size to eg. 1024 KB, then pressing Apply, once returning to the Setting window the max file size shows 1 KB.


Win10/11

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#3 2026-04-10 20:47:24

navigat0r
Member
Registered: 2013-02-13
Posts: 162

Re: Quick View hangs

OK, the preview is broken, JM hangs also with a 150MB .mp4 file when previeing.


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#4 2026-04-11 04:32:39

nleontiev
Lead developer
From: SPb
Registered: 2012-09-19
Posts: 1,177
Website

Re: Quick View hangs

navigat0r wrote:

Steps to reproduce:

1. Activate Quick View (Ctrl+Q)
2. Select a virtual hard disk (.vhdx)

Just Manager hangs:

Quick viewer uses standard Rich Edit to display text/binary files. Rich Edit requires reading the entire file, that's why JM "hangs" during this process.
Currently you need to limit file size (Configuration > Settings... > Quick viewer > Max file size) to prevent such cases.
This is old code that needs refactoring.

navigat0r wrote:

There is another issue with Quick viewer. After changing the max file size to eg. 1024 KB, then pressing Apply, once returning to the Setting window the max file size shows 1 KB.

Can't reproduce. What are the steps?

navigat0r wrote:

OK, the preview is broken, JM hangs also with a 150MB .mp4 file when previeing.

Since the video preview is not supported in JM, it loads 150 Mb data to the Rich Edit.

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#5 2026-04-12 09:32:17

navigat0r
Member
Registered: 2013-02-13
Posts: 162

Re: Quick View hangs

steps to reproduce:
2026-04-12-11h25-22.gif


Win10/11

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#6 2026-04-13 08:34:25

nleontiev
Lead developer
From: SPb
Registered: 2012-09-19
Posts: 1,177
Website

Re: Quick View hangs

navigat0r wrote:

steps to reproduce:

Thanks. It's an old bug. Will be fixed in the next release.

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