Crash when opening/writing shell script because of ' << % ' (Plain Text Editor)

I have a simple shell script with the following content: << % (see attachment).

• Opening this script in QtCreator using Plain Text Editor freezes QtCreator on Windows and Linux. (a)
• A crash occurs as soon as this combination is typed into an opened shell script. (b)
  • Error log:"terminate called after throwing an instance of 'std::bad_alloc'
    what(): std::bad_alloc"

QtCreator does not crash, if << and % are separated by a line break.

Steps to reproduce:

(a)

1. Create shell script with the following line: << % (see attachment).
2. Make script executable
3. Open script in QtCreator's Plain Text Editor (File > Open File With... > Plain Text Editor)
4. Freeze

(b)

1. Create shell script
2. Make script executable
3. Open script in QtCreator's Plain Text Editor (File > Open File With... > Plain Text Editor)
4. Type << % in the script
5. Crash