TC 7.50+: crash when moving files with thumbnail view

[Vasilich]

haven't found similar bugreport here, so made a new post.
Crash report:
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Total Commander 7.50a fin
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Access violation at address 0069C378. Read of address 00000000.

Please report this error to the Author, with a description
of what you were doing when this error occurred!

Windows exception: C0000005
Stack trace:
0069C378
6952D9 500E92 5011EE 442479 4443BA >414514
44397B 414514 419B58 419BF0 69F119
Raw:
6952D9 500E92 4438E9 414514 444733 442479
444689 433D25 443A3D 4443BA 4443DD 414514
44397B 414514 502524 442479 444689 4161F0
443A3D 4443BA 4443DD 414514 4438E9 414514
444733 442479 444689 433D25 443A3D 4443BA
4443DD 414514 44397B 414514 67884F 69C025
69C11F 69623E 5011EE 464AA3 464ACB 660999
668482 6660A5 690062 407912 69C025 69C11F
69C025 658937 407912 402235 4023B3 4023DB
4026A4 4036C5 4037AE 407C2E 431F4B 414514

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Continue execution?
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Yes No
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Steps to reproduce:
1. enter any network folder accessible via SMB protocol (haven't tried to map it to any drive letter, just used e.g. "\\Diskstation\pictures\unsorted\") on left panel, and any subfolder for the same SMB share - for the right panel (e.g. "\\Diskstation\pictures\2007\") .
2. switch on thumbnail view for left panel. Setting "Loading thumbnails": tried "load from plugins", "Use explorer (OLE)" and "Use Irfan" - happens with any of these settings.
3. try to move some files from left panel to the right panel. in 80% i get crashes. if you need some more crash reports (i used Ctrl+C from that crash report window) - let me know.

additional info: i use NAS Server Synology DS209 accessing via SMB protocol.

[ghisler(Author)]

I will check it, thanks.