I created a custom widget according to Widget API and it seems to work until I make changes. The save button is not triggered, this problem is only affecting this new widget.
Ps. The custom widget is also part of a dynamic_sidebar but every other widget works fine.
The button is enabled but not triggered.
Edit. Widget code
I have checked code of codeshare.io/2jJLDK and found the issue. Please follow below instructions for fix this issue.
In the form function, you have used input type as "url" for Link and as per rule of input type "url", it can't take "#" so you must use actual url with http/https like https://www.google.com/ for saving/updating widget link data.*
If you want to save/update widget link data with "#" then you need to change input type as "text" like below
From:
<input type="url" name="<?php echo esc_attr( $this->get_field_name( 'link' ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( 'link' ) ); ?>" class="widefat" value="<?php echo esc_attr( $link ) ?>">
To:
<input type="text" name="<?php echo esc_attr( $this->get_field_name( 'link' ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( 'link' ) ); ?>" class="widefat" value="<?php echo esc_attr( $link ) ?>">
