I think this is related to #45194

I noticed this so far only in EXT:imagecycle, because of this I posted it there.

can confirm this for all Typo3 6.* Versions! This is not a should have, it's a must have!

Bump for next patch.
This is quite a big issue for all Users who need to select more than 10 files for a gallery or imageslider.

So it is sure a must-have.

edited: Got the problem ignore my previous comment

Perfect. Thanks @Nico this worked for me.

In my 6.2.9 installation this problem is almost there.
I did the solution from the last comment and it works. But is this problem not fixed in core until now?

Problem still exists in 6.2.12; fix from @Nico still works in 6.2.12

Hook Solution¶

ext_localconf.php

$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/class.browse_links.php']['browseLinksHook'][] = 'Vendor\RegionalObject\Hook\BrowseLinksHook';

BrowseLinksHook.php

namespace Vendor\RegionalObject\Hook;

use TYPO3\CMS\Core\ElementBrowser\ElementBrowserHookInterface;

class BrowseLinksHook implements \TYPO3\CMS\Core\ElementBrowser\ElementBrowserHookInterface
{
    /**
     * Initializes the hook object
     *
     * @param \TYPO3\CMS\Recordlist\Browser\ElementBrowser Parent browse_links object
     * @param array Additional parameters
     * @return void
     */
    public function init($parentObject, $additionalParameters){
        $resourcePathJavaScript = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extRelPath('...') . 'Resources/...';
        $parentObject->doc->loadJavascriptLib("{$resourcePathJavaScript}/browse_links.js");
    }

    /**
     * Adds new items to the currently allowed ones and returns them
     *
     * @param array Currently allowed items
     * @return array Currently allowed items plus added items
     */
    public function addAllowedItems($currentlyAllowedItems){

    }

    /**
     * Modifies the menu definition and returns it
     *
     * @param array    Menu definition
     * @return array Modified menu definition
     */
    public function modifyMenuDefinition($menuDefinition){

    }

    /**
     * Returns a new tab for the browse links wizard
     *
     * @param string Current link selector action
     * @return string A tab for the selected link action
     */
    public function getTab($linkSelectorAction){

    }

    /**
     * Checks the current URL and determines what to do
     *
     * @param string $href
     * @param string $siteUrl
     * @param array $info
     * @return array
     */
    public function parseCurrentUrl($href, $siteUrl, $info){

    }
}

Then extend your insertMultiple with your custom JS.

Or just use the solution from @Nico.

Tell me pls, where this file should be allocated? (BrowseLinksHook.php)
Did it with my own extension, allowing to choose in backend, which js to use in import selection

The bug still exists in TYPO3 6.2.12. Tested with Firefox and Chrome.

The ElementBrowser and specially the JS-Stuff need a complete refactoring.

Patch set 2 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at http://review.typo3.org/39744

Patch set 3 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at http://review.typo3.org/39744