Invisible ToC in small screens when page parameter sidebar is set to false

[Rubonnek]

Prerequisites

• I have searched for duplicate or closed issues
• I have searched for relatived questions
• I have read documentations

Describe the issue

Same as title. Invisible ToC in small screens when page parameter sidebar is set to false

Steps to reproduce

Over the skeleton, apply this patch:

diff --git a/content/news/more-image-processing-methods/index.md b/content/news/more-image-processing-methods/index.md
index 85342ca..948ecdf 100644
--- a/content/news/more-image-processing-methods/index.md
+++ b/content/news/more-image-processing-methods/index.md
@@ -21,10 +21,16 @@ tags:
 authors:
   - RazonYang
 images: []
+sidebar: false
 ---
 
 Since `v1.0.0-alpha.1`, HBS supports much more image processing methods. Such as Crop, Fit and Fill images. You can also apply filters on an image.
 
 <!--more-->
 
+# 1
+## 2
+### 3
+#### 4
+

See the ToC:

Expected behavior

What operating system(s) are you seeing the problem on?

Linux

What browser(s) are you seeing the problem on?

Firefox

What version of theme are you using?

v1.0.0-alpha.15.0.20221115114142-09a902be931f // indirect

What version of Hugo are you using?

hugo v0.105.0+extended linux/amd64 BuildDate=unknown

What version of Node.js are you using?

16

What version of Git are you using?

2.38

Additional context

No response

[razonyang]

Thanks for the feedback, the TOC will always be shown if the sidebar is disabled, regardless of the screen sizes.