diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 00691d461..ad2fc69ce 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -32,6 +32,8 @@ This release of fish fixes a number of issues identified in fish 4.0.2:
 - The routines to save history and universal variables have seen some robustness improvements.
 - Vi mode: The cursor position after pasting via :kbd:`p` has been corrected.
 - Vi mode: Trying to replace the last character via :kbd:`r` no longer replaces the last-but-one character (:issue:`11484`),
+- To work around terminals that fail to parse OSC sequences, a temporary feature flag has been added.
+  It allows you to disable prompt marking (OSC 133) by running (once) ``set -Ua fish_features no-mark-prompt" and restarting fish (:issue:`11749`).
 
 fish 4.0.2 (released April 20, 2025)
 ====================================
diff --git a/src/future_feature_flags.rs b/src/future_feature_flags.rs
index 38000e38a..dbef7638b 100644
--- a/src/future_feature_flags.rs
+++ b/src/future_feature_flags.rs
@@ -30,6 +30,9 @@ pub enum FeatureFlag {
 
     /// Whether keyboard protocols (kitty's CSI x u, xterm's modifyOtherKeys) are used
     keyboard_protocols,
+
+    /// Whether to write OSC 133 prompt markers
+    mark_prompt,
 }
 
 struct Features {
@@ -118,6 +121,14 @@ pub struct FeatureMetadata {
         default_value: true,
         read_only: false,
     },
+    FeatureMetadata {
+        flag: FeatureFlag::mark_prompt,
+        name: L!("mark-prompt"),
+        groups: L!("4.0"),
+        description: L!("Write OSC 133 prompt markers to the terminal"),
+        default_value: true,
+        read_only: false,
+    },
 ];
 
 thread_local!(
@@ -180,6 +191,7 @@ const fn new() -> Self {
                 AtomicBool::new(METADATA[4].default_value),
                 AtomicBool::new(METADATA[5].default_value),
                 AtomicBool::new(METADATA[6].default_value),
+                AtomicBool::new(METADATA[7].default_value),
             ],
         }
     }
diff --git a/src/reader.rs b/src/reader.rs
index 496982ad3..783aaa1b2 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -66,6 +66,7 @@
 use crate::flog::{FLOG, FLOGF};
 #[allow(unused_imports)]
 use crate::future::IsSomeAnd;
+use crate::future_feature_flags::{feature_test, FeatureFlag};
 use crate::global_safety::RelaxedAtomicBool;
 use crate::highlight::{
     autosuggest_validate_from_history, highlight_shell, HighlightRole, HighlightSpec,
@@ -664,13 +665,15 @@ fn read_i(parser: &Parser) -> i32 {
         data.command_line.clear();
         data.update_buff_pos(EditableLineTag::Commandline, None);
         data.command_line_changed(EditableLineTag::Commandline);
-        // OSC 133 "Command start"
-        write!(
-            BufferedOuputter::new(&mut Outputter::stdoutput().borrow_mut()),
-            "\x1b]133;C;cmdline_url={}\x07",
-            escape_string(&command, EscapeStringStyle::Url),
-        )
-        .unwrap();
+        if feature_test(FeatureFlag::mark_prompt) {
+            // OSC 133 "Command start"
+            write!(
+                BufferedOuputter::new(&mut Outputter::stdoutput().borrow_mut()),
+                "\x1b]133;C;cmdline_url={}\x07",
+                escape_string(&command, EscapeStringStyle::Url),
+            )
+            .unwrap();
+        }
         event::fire_generic(parser, L!("fish_preexec").to_owned(), vec![command.clone()]);
         let eval_res = reader_run_command(parser, &command);
         signal_clear_cancel();
@@ -683,12 +686,14 @@ fn read_i(parser: &Parser) -> i32 {
         parser.libdata_mut().exit_current_script = false;
 
         // OSC 133 "Command finished"
-        write!(
-            BufferedOuputter::new(&mut Outputter::stdoutput().borrow_mut()),
-            "\x1b]133;D;{}\x07",
-            parser.get_last_status()
-        )
-        .unwrap();
+        if feature_test(FeatureFlag::mark_prompt) {
+            write!(
+                BufferedOuputter::new(&mut Outputter::stdoutput().borrow_mut()),
+                "\x1b]133;D;{}\x07",
+                parser.get_last_status()
+            )
+            .unwrap();
+        }
         event::fire_generic(parser, L!("fish_postexec").to_owned(), vec![command]);
         // Allow any pending history items to be returned in the history array.
         data.history.resolve_pending();
diff --git a/src/screen.rs b/src/screen.rs
index 158512e1e..edcbb1c65 100644
--- a/src/screen.rs
+++ b/src/screen.rs
@@ -7,6 +7,7 @@
 //! The current implementation is less smart than ncurses allows and can not for example move blocks
 //! of text around to handle text insertion.
 
+use crate::future_feature_flags::{feature_test, FeatureFlag};
 use crate::pager::{PageRendering, Pager, PAGER_MIN_HEIGHT};
 use std::cell::RefCell;
 use std::collections::LinkedList;
@@ -931,8 +932,11 @@ fn update(
         } else if left_prompt != zelf.actual_left_prompt || (zelf.scrolled && is_final_rendering) {
             zelf.r#move(0, 0);
             let mut start = 0;
-            let osc_133_prompt_start =
-                |zelf: &mut Screen| zelf.write_bytes(b"\x1b]133;A;special_key=1\x07");
+            let osc_133_prompt_start = |zelf: &mut Screen| {
+                if feature_test(FeatureFlag::mark_prompt) {
+                    zelf.write_bytes(b"\x1b]133;A;special_key=1\x07");
+                }
+            };
             if left_prompt_layout.line_breaks.is_empty() {
                 osc_133_prompt_start(&mut zelf);
             }
diff --git a/tests/checks/status.fish b/tests/checks/status.fish
index 7626d437e..82bc2950a 100644
--- a/tests/checks/status.fish
+++ b/tests/checks/status.fish
@@ -63,6 +63,7 @@ status features
 #CHECK: remove-percent-self     off 4.0 %self is no longer expanded (use $fish_pid)
 #CHECK: test-require-arg        off 4.0 builtin test requires an argument
 #CHECK: keyboard-protocols      on  4.0 Use keyboard protocols (kitty, xterm's modifyotherkeys
+#CHECK: mark-prompt             on  4.0 Write OSC 133 prompt markers to the terminal
 status test-feature stderr-nocaret
 echo $status
 #CHECK: 0