From 84d0ec24948a2220ed29513b91b845b5afa46d3e Mon Sep 17 00:00:00 2001
From: jpstrikesback <jpstrikesback@users.noreply.github.com>
Date: Thu, 26 Apr 2018 09:19:14 -0400
Subject: [PATCH] Tracking PR #18627

---
 Libraries/Text/TextInput/RCTBaseTextInputView.m | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Libraries/Text/TextInput/RCTBaseTextInputView.m b/Libraries/Text/TextInput/RCTBaseTextInputView.m
index d9c47ff16311d4..99b41df6c35611 100644
--- a/Libraries/Text/TextInput/RCTBaseTextInputView.m
+++ b/Libraries/Text/TextInput/RCTBaseTextInputView.m
@@ -268,7 +268,12 @@ - (BOOL)textInputShouldChangeTextInRange:(NSRange)range replacementText:(NSStrin
 
   NSString *previousText = [_predictedText substringWithRange:range] ?: @"";
 
-  if (_predictedText) {
+  // After clearing the text by replacing it with an empty string, `_predictedText`
+  // still preserves the deleted text.
+  // As the first character in the TextInput always comes with the range value (0, 0),
+  // we should check the range value in order to avoid appending a character to the deleted string
+  // (which caused the issue #18374)
+  if (!NSEqualRanges(range, NSMakeRange(0, 0)) && _predictedText) {
     _predictedText = [_predictedText stringByReplacingCharactersInRange:range withString:text];
   } else {
     _predictedText = text;