diff --git a/docs/changelog.rst b/docs/changelog.rst
index 02fcacfeb..cf70ada08 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -13,6 +13,10 @@ Changelog
   font fallback for all subsequent characters that cannot be rendered in the
   main font to fail (:iss:`799`)
 
+- Linux: Do not enable IME input via ibus unless the ``GLFW_IM_MODULE=ibus``
+  environment variable is set. IME causes key processing latency and even
+  missed keystrokes for many people, so it is now off by default.
+
 - Fix backspacing of wide characters in wide-character unaware programs not working (:iss:`875`)
 
 - Linux: Fix number pad arrow keys not working when Numlock is off (:iss:`857`)
diff --git a/glfw/ibus_glfw.c b/glfw/ibus_glfw.c
index 61bd0df99..16c952bd6 100644
--- a/glfw/ibus_glfw.c
+++ b/glfw/ibus_glfw.c
@@ -280,8 +280,7 @@ setup_connection(_GLFWIBUSData *ibus) {
 void
 glfw_connect_to_ibus(_GLFWIBUSData *ibus) {
     if (ibus->inited) return;
-    if (!test_env_var("XMODIFIERS", "@im=ibus") && !test_env_var("GTK_IM_MODULE", "ibus") && !test_env_var("QT_IM_MODULE", "ibus") && !test_env_var("GLFW_IM_MODULE", "ibus")) return;
-    if (getenv("GLFW_IM_MODULE") && !test_env_var("GLFW_IM_MODULE", "ibus")) return;
+    if (!test_env_var("GLFW_IM_MODULE", "ibus")) return;
     ibus->inited = GLFW_TRUE;
     setup_connection(ibus);
 }