# The 160 version of the track controller has a bug where mouse zoom fails when the browser zoom is less than 100

**URL:** <https://discourse.threejs.org/t/the-160-version-of-the-track-controller-has-a-bug-where-mouse-zoom-fails-when-the-browser-zoom-is-less-than-100/59742>\
**Category:** Questions\
**Tags:** trackball-controls\
**Created:** [December 29, 2023, 10:19am UTC](https://discourse.threejs.org/t/the-160-version-of-the-track-controller-has-a-bug-where-mouse-zoom-fails-when-the-browser-zoom-is-less-than-100/59742 "2023-12-29T10:19:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![3153848875huhu](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/3153848875huhu/32/43381_2.png) [@3153848875huhu](https://discourse.threejs.org/u/3153848875huhu)\
**Post date:** [December 29, 2023, 10:19am UTC](https://discourse.threejs.org/t/the-160-version-of-the-track-controller-has-a-bug-where-mouse-zoom-fails-when-the-browser-zoom-is-less-than-100/59742/1 "2023-12-29T10:19:19Z")

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The 160 version of the track controller has a bug where mouse zoom fails when the browser zoom is less than 100

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**Author:** ![Mugen87](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/mugen87/32/5645_2.png) [@Mugen87](https://discourse.threejs.org/u/Mugen87)\
**Post date:** [December 29, 2023, 10:23am UTC](https://discourse.threejs.org/t/the-160-version-of-the-track-controller-has-a-bug-where-mouse-zoom-fails-when-the-browser-zoom-is-less-than-100/59742/2 "2023-12-29T10:23:05Z")

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According to the title of the topic it seems you only experience an issue with `r160`. However, `TrackballControls` hasn’t been updated in this release. Can you pinpoint when this issue has come up for the first time? Or did this never work?

In general, using browser zoom can introduce issues with certain modules.