# NO BUG: CSS Classes dropdown viewer (left panel) is extremely slow

**URL:** <https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826>\
**Category:** Bugs\
**Tags:** v1-10-2\
**Created:** [September 1, 2024, 2:09pm UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826 "2024-09-01T14:09:20Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![bricksbuilder001](https://forum.bricksbuilder.io/letter_avatar_proxy/v4/letter/b/ee59a6/32.png) [@bricksbuilder001](https://forum.bricksbuilder.io/u/bricksbuilder001)\
**Post date:** [September 1, 2024, 2:09pm UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826/1 "2024-09-01T14:09:20Z")

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Browser: Chrome Version 128.0.6613.114 (Official Build) (64-bit)

The CSS Class (dropdown) viewer on the left panel has become extremely slow, taking about 2-3 seconds for the classes dropdown to appear after clicking.

I have Advanced Themer so have tried deactivating it, but no luck.

BricksVersion: 1.10.2

![image](https://forum.bricksbuilder.io/uploads/default/original/3X/c/a/ca8e61cc145a427c829eef32574ba1b3ec27fe1a.png)

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<div class="post-metadata">

**Author:** ![bricksbuilder001](https://forum.bricksbuilder.io/letter_avatar_proxy/v4/letter/b/ee59a6/32.png) [@bricksbuilder001](https://forum.bricksbuilder.io/u/bricksbuilder001)\
**Post date:** [September 2, 2024, 2:11am UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826/2 "2024-09-02T02:11:09Z")

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The builder actually feels quite sluggish when I click on any elements, the left panel is extremely obvious.

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**Author:** ![Matej](https://forum.bricksbuilder.io/user_avatar/forum.bricksbuilder.io/matej/32/20184_2.png) [@Matej](https://forum.bricksbuilder.io/u/Matej)\
**Post date:** [September 2, 2024, 9:43am UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826/3 "2024-09-02T09:43:54Z")

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Hi,  
thank you for your report. Since it’s hard to reproduce this locally (I can’t, it works nicely for me), I would ask you if you can send temporary login credentials to your website and a link to this thread to [help@bricksbuilder.io](mailto:help@bricksbuilder.io) using the email address you used during the purchase, so we can take a look?  
That would help us a lot.

Thank you,  
M

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<div class="post-metadata">

**Author:** ![bricksbuilder001](https://forum.bricksbuilder.io/letter_avatar_proxy/v4/letter/b/ee59a6/32.png) [@bricksbuilder001](https://forum.bricksbuilder.io/u/bricksbuilder001)\
**Post date:** [September 2, 2024, 11:28am UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826/4 "2024-09-02T11:28:53Z")

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Hi,

I have send it over.

Thanks!

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<div class="post-metadata">

**Author:** ![bricksbuilder001](https://forum.bricksbuilder.io/letter_avatar_proxy/v4/letter/b/ee59a6/32.png) [@bricksbuilder001](https://forum.bricksbuilder.io/u/bricksbuilder001)\
**Post date:** [September 2, 2024, 11:26pm UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826/5 "2024-09-02T23:26:21Z")

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Please disregard my request and make this post as NO BUG. It’s highly likely a local issue with a particular PC work station. Sorry and thank you.

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<div class="post-metadata">

**Author:** ![Matej](https://forum.bricksbuilder.io/user_avatar/forum.bricksbuilder.io/matej/32/20184_2.png) [@Matej](https://forum.bricksbuilder.io/u/Matej)\
**Post date:** [September 3, 2024, 6:48am UTC](https://forum.bricksbuilder.io/t/no-bug-css-classes-dropdown-viewer-left-panel-is-extremely-slow/25826/6 "2024-09-03T06:48:08Z")

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Hi,

thank you for notifying us. I also tested your website just before I saw this message and all seemed fine on my end.

I’ll mark it as a NO BUG.

Best regards,  
M