CSS position:sticky

- WD

Chrome

  1. 121
  2. 122
  3. 123
  4. 124
  5. 125
  6. 126
  7. 127

Edge

  1. 120
  2. 121
  3. 122
  4. 123

Safari

  1. 17.1
  2. 17.2
  3. 17.3
  4. 17.4
  5. 17.5
  6. TP

Firefox

  1. 122
  2. 123
  3. 124
  4. 125
  5. 126
  6. 127
  7. 128

Opera

  1. 106
  2. 107
  3. 108
  4. 109

IE

  1. 8
  2. 9
  3. 10
  4. 11

Chrome for Android

  1. 123

Safari on iOS

  1. 17.1
  2. 17.2
  3. 17.3
  4. 17.4
  5. 17.5

Samsung Internet

  1. 21
  2. 22
  3. 23
  4. 24

Opera Mini

  1. all

Opera Mobile

  1. 11.5
  2. 12
  3. 12.1
  4. 80

UC Browser for Android

  1. 15.5

Android Browser

  1. 4.2-4.3
  2. 4.4
  3. 4.4.3-4.4.4
  4. 123

Firefox for Android

  1. 124

QQ Browser

  1. 14.9

Baidu Browser

  1. 13.52

KaiOS Browser

  1. 2.5
  2. 3.0-3.1

Any ancestor between the sticky element and its user-scrollable container with overflow computed as anything but visible/clip will effectively prevent sticking behavior.