Plugin Author
Ajay
(@ajay)
@dxylott54
It looks like this is an issue with the classic editor. Are you using the classic editor plugin? And, am I correct the the font e.g. Firefox that you have in the box changes between the two versions?
I want to see if I can replicate this.
I am not using the Classic Editor plugin.
Since the Luxeritas WordPress theme includes a Classic Editor mode, I am using that instead. (To be precise, disabling the Block Editor enables the Classic Editor.)
Luxeritas (English ver)
https://thk.kanzae.net/wp/dl-2/
And, am I correct the the font e.g. Firefox that you have in the box changes between the two versions?
Yes.
I want to see if I can replicate this.
Please use the settings shown in the image below.
Luxeritas: Block Editor Disable Settings
https://www.experimental-address.com/wp-content/uploads/2026/03/block-editor-disable-1.png
Plugin Author
Ajay
(@ajay)
@dxylott54
I’ve tried to replicate this at my end but I’ve not been able to.
In your site, where you have the plugin metabod enabled/disabled, can you right-click on the text in the editor and Inspect? See what the font being used and the source of the font i.e. which css file.
Please see this for Firefox in case you’re not familiar: https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/open_the_inspector/index.html
Plugin Author
Ajay
(@ajay)
I am looking at https://www.experimental-address.com/wp-content/uploads/2026/03/metabox-on2.png vs off.
What I can see there is something setting font-family: Arial. I can’t read the script of the source (is it inline?). Can you see what the source there is from?
What I can see there is something setting font-family: Arial. I can’t read the script of the source (is it inline?).
Yes. It says “inline:1.”
When I clicked “inline:1,” “inline style sheet #1” appeared.
The line “ .ui-widget button,” on line 371 appeared.
The contents are in the following file.
https://www.experimental-address.com/wp-content/uploads/2026/03/inline-style-sheet1.txt
Plugin Author
Ajay
(@ajay)
Since it is the admin area, I cannot exactly see what is going on. Are you able to do a Tools > Browser Tools > View source (Ctrl/Cmd+U) which will open the HTML page. Can you find if that element you see there is wrapped in some <style> tag?
I don’t have .ui-widget anywhere in my plugin’s source code so it’s not coming from my plugin but likely something else.
The section enclosed in style tags in the source code is the following file.
https://www.experimental-address.com/wp-content/uploads/2026/03/style-metabox-on.zip
Since I couldn’t upload it as a .txt file, I’ve zipped it.
I believe the string “thk” is related to the WordPress theme Luxeritas.
Plugin Author
Ajay
(@ajay)
@dxylott54
I think this code is being added by your theme or some other plugin. The quickest way is to try switching themes, and/or alternatively, disabling plugins to isolate the problem.
It looks like a bigger problem than just the metabox.
oh…
Thank you for looking into this.
It’s strange that this issue started occurring in 4.2.2, even though there were no problems in 4.2.1.
I’ll use it with Metabox disabled.
Thank you very much.
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This reply was modified 2 weeks, 5 days ago by
dxylott54.
