--- old/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.m	2019-09-25 16:25:46.000000000 +0530
+++ new/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.m	2019-09-25 16:25:45.000000000 +0530
@@ -951,8 +951,14 @@
     NSUInteger utf16Length = [useString lengthOfBytesUsingEncoding:NSUTF16StringEncoding];
     NSUInteger utf8Length = [useString lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
     BOOL aStringIsComplex = NO;
+
+    CFStringRef layoutID = TISGetInputSourceProperty(TISCopyCurrentKeyboardInputSource(), kTISPropertyInputSourceID);
+    NSString *str = (NSString *)layoutID;
+    unichar codePoint = [useString characterAtIndex:0];
+
     if ((utf16Length > 2) ||
-        ((utf8Length > 1) && [self isCodePointInUnicodeBlockNeedingIMEvent:[useString characterAtIndex:0]])) {
+        ((utf8Length > 1) && [self isCodePointInUnicodeBlockNeedingIMEvent:[useString characterAtIndex:0]]) ||
+        ((codePoint == 0x5c) && ([(NSString *)layoutID containsString:@"Kotoeri"]))) {
         aStringIsComplex = YES;
     }