Hi,
I think this problem is linked with the new feature block feature of WordPress for widgets (wp 5.8).
I have just installed Disable blocks widget extension in order to fix this problem.
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This reply was modified 4 years, 8 months ago by daviddelon.
Hello,
Replacing htmlspecialchars_decode($category[$i]->cat_name) by addslashes(htmlspecialchars_decode($category[$i]->cat_name)) fixed the problem, a similar fix should be applied to this plugin.
David.