EAccessViolation 000000000052EF09

I have many bugs like this, it almost stops with previous version, it occured i think when i opened a file and pressed F3 to find previously used regexp "require|include"

Exception description:

Access violation at address in module 'PSPad.exe'. Read of address .

Exception class:
Exception address:
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Stack list, generated 27. 4. 2021 19:24:37
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Please don't post exception report into forum.
Send it to my support address (see Help > About).

And please add short description what you did when exception occurred,
e.g.: close file (generic advice, nothing special to you)
In some cases I am else not able to recognize what caused exception.

Thank you.
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Program : C:\Programy\PSPad editor\PSPad.exe 5.0.7 (600)
System : Windows 8.1 Professional x64, Version: 6.3, Build: 2580,
Processor: AMD, AMD FX(tm)-9370 Eight-Core Processor , 4266 MHz MMX
Display : 1920x1080 pixels, 32 bpp PPI: 96
Skin : Windows
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Active Controls Hierarchy:
TPSSynEdit ""
TfChildEdit ""
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Edited 1 time(s). Last edit at 2021-04-28 11:38 by Stefan.

This time i diffed files, clicked from diff tab on a second file and was selecting line of code (click shift+home). Not the first time in a similar situation, after switching from a fresh diff file tab.

Exception description:

Access violation at address in module 'PSPad.exe'. Read of address .

Exception class:
Exception address:
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Stack list, generated 28. 4. 2021 1:53:53

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.
.
Please don't post exception report into forum.
Send it to my support address (see Help > About).

Thank you.
.
.
.
----------------------------------------------------------------------------------------------------
Program : C:\Programy\PSPad editor\PSPad.exe 5.0.7 (600)
System : Windows 8.1 Professional x64, Version: 6.3, Build: 2580,
Processor: AMD, AMD FX(tm)-9370 Eight-Core Processor , 4280 MHz MMX
Display : 1920x1080 pixels, 32 bpp PPI: 96
Skin : Windows
----------------------------------------------------------------------------------------------------
Active Controls Hierarchy:
TPSSynEdit ""
TfChildEdit ""
----------------------------------------------------------------------------------------------------

Edited 1 time(s). Last edit at 2021-04-28 11:39 by Stefan.

And now it's happening just by pressing shift (only in that second file)
.
.
.
Please don't post exception report into forum.
Send it to my support address (see Help > About).

Thank you.
.
.
.

Edited 1 time(s). Last edit at 2021-04-28 11:37 by Stefan.