Fixed an issue where Vulkan and D3D12 device filter assets would use the default .NET Regular Expression engine to check valid regular expressions when the Player engine explicitly used ECMAScript.
6.2 is no longer supported
This version of Unity has reach end of life and is no longer supported.
The C++ uses the default std::regex modified ECMAScript format while the C# editor validation checker uses the default .NET engine which it should have the ECMAScript option
C# regex engine intersects the ECMAScript to a decent degree but not fully. There are valid regex combos in ECMAScript that the C# layer may not allow
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Have a workaround or additional info about this issue?