wordpress plugin update count stuck

re-installing wordpress fix the problem

after installing a new plugin, the counter stuck again on 1 update available, but all of them are up to date.

should i really do re-install every time I add a new plugin?

* theme specific issue

My website has this problem.
The admin bar shows 1 plugin update required.
The left admin navbar shows a red 1 against Updates and against Plugins.

I have a lot of plugins installed (not all are currently activated).
But they are all uptodate.

I tried activating a different theme and the problem persisted.
So for me it’s not a theme-specific issue.

What prompts the display of the plugin update indicator?
Is there a counter in the database somewhere that I could reset with phpMyadmin?
That would be easier than reinstalling WordPress to fix the problem.

I haven’t included a link to the site because the problem is only visible to logged on authorised users.

@adrian

This usually happens when a theme package a plugin inside it. I still have the same issue on other (premium) theme, but I deal with it (ignore it)

Thanks for the suggestion.
I am using the grapheme theme which used to bundle some shortcode definitions.

In the latest version of grapheme they removed the shortcodes from the theme and packaged them as a separate plugin.

I have that plugin installed so I tried removing it.
That didn’t fix the problem.

Hopefully some wordpress expert will read this and explain how the count of pending updates is calculated.
Then we might figure out a way to resolve the problem.