ModernPerl syntax error

Hi,
I tried importing to VS Code a syntax from Sublime's ModernPerl.
Syntax is in .plist file, attached here: Perl.commented-bad.txt (as .txt becouse of GitHub...).
There are 3 problematic scopes in this file. They are commented out and VS Code works and colorize the Perl code, but if I uncomment them, then I get:

ERR empty range in char class: Error: empty range in char class
    at createOnigScanner (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:1346:12)
    at RegExpSourceList.compile (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:1399:30)
    at IncludeOnlyRule.compile (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:1492:45)
    at matchRule (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:2240:28)
    at matchRuleOrInjections (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:2256:23)
    at scanNext (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:2346:17)
    at _tokenizeString (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:2339:9)
    at Grammar._tokenize (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:2107:25)
    at Grammar.tokenizeLine2 (/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar/vscode-textmate/release/main.js:2077:22)
    at e.tokenize2 (file:///Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3254:428)

Same file worked in Sublime perfectly.
Any ideas what is causing the problem?

Start with the attached Perl.commented-bad.txt grammar and reproduce the reported error in the tokenizer, comparing its behavior with Sublime's ModernPerl syntax. Identify the three commented scopes involved and verify that the grammar loads and colorizes Perl code without the empty-range error.