Bug report via internal suggestion.

[PakhomCh]

Bug occured when copying from one MSE window to another one during editing cards with a custom template.

MSE displayed the following:

An internal error occured:

invalid vector subscript
Please save your work (use 'save as' to so you don't overwrite things)
and restart Magic Set Editor.

You should leave a bug report on https://github.com/twanvl/MagicSetEditor2/issues/
Press Ctrl+C to copy this message to the clipboard.

Call stack:
[00] 00007FF6E2519987
[01] 00007FF6E2993870
[02] 00007FF6E2939F00
[03] 00007FF6E2938DD9
[04] RtlCaptureContext2
[05] 00007FF6E24B8A8C
[06] 00007FF6E270B644
[07] 00007FF6E273E1FF
[08] 00007FF6E273DE77
[09] 00007FF6E273F04C
[10] 00007FF6E273E12A
[11] 00007FF6E259D43E
[12] 00007FF6E273E17C
[13] 00007FF6E273EC3A
[14] 00007FF6E25FBF46
[15] 00007FF6E2654C5B
[16] 00007FF6E2655501
[17] 00007FF6E258D135
[18] CallWindowProcW
[19] DispatchMessageW
[20] SendMessageTimeoutW