clang-format option AlignTrailingComments: Leave misaligns comment-only lines

[MatejVitek]

I'm using clang-format in VS Code (via Microsoft's C/C++ extension) with the following setup:

"C_Cpp.clang_format_style": "{BasedOnStyle: LLVM, UseTab: ForIndentation, IndentWidth: 4, TabWidth: 4, ColumnLimit: 0, PointerAlignment: Left, BreakBeforeBraces: Attach, SortIncludes: CaseInsensitive, AllowShortIfStatementsOnASingleLine: Never, AlignTrailingComments: Leave, SpacesBeforeTrailingComments: 2, SpaceBeforeCaseColon: false, InsertNewlineAtEOF: true}",

However, this setup is indenting my comment lines incorrectly. My expected result would look like:

int main(int argc, char* argv[]) {
	// create 10 threads
	pthread_t threads[10];
	for (int i = 0; i < 10; i++)
		pthread_create(&threads[i], NULL, thread, NULL);

	// wait for a bit then stop the threads
	sleep(3);
	for (int i = 0; i < 10; i++) {
		// pthread_yield();  // deprecated
		sched_yield();
		pthread_cancel(threads[i]);  // cancel thread
	}
}

However, the result of formatting with the above setup is the following:

int main(int argc, char* argv[]) {
 // create 10 threads
	pthread_t threads[10];
	for (int i = 0; i < 10; i++)
		pthread_create(&threads[i], NULL, thread, NULL);

 // wait for a bit then stop the threads
	sleep(3);
	for (int i = 0; i < 10; i++) {
  // pthread_yield();  // deprecated
		sched_yield();
		pthread_cancel(threads[i]);  // cancel thread
	}
}

This seems to be caused by the setting AlignTrailingComments: Leave. Setting this option to either Never or Always formats comment-only lines correctly (but obviously correspondingly changes the behaviour for actual trailing comments).