MCM filter drop-down box missing

I fixed it using the tips described.
However, I copied the code from the WordPress css itself being:

/* Fix display attachment-filters */
.media-frame select.attachment-filters {
    max-width: calc(48% - 12px) !important;
}

This because in my screen, I only see two boxes, including the one from MCM.
What are the conditions when there are more boxes shown?

Probably the issue has something to do with non-English installations, because combo boxes are wider:

View post on imgur.com

vs.

View post on imgur.com

Here is the latest patch:

Change in wp-content/plugins/wp-media-category-management/css/admin.css from:

.media-frame select.attachment-filters {
    max-width: calc(48% - 12px) !important;
}

to:

.media-frame select.attachment-filters {
    max-width: 30% !important;
}

Then update wp-content/plugins/wp-media-category-management/include/class-wp-mcm-plugin.php from:

wp_enqueue_style( $this->plugin_slug .'-admin-styles', WP_MCM_URL . '/css/admin.css', array(), WP_MCM_VERSION . '.1');

to:

wp_enqueue_style( $this->plugin_slug .'-admin-styles', WP_MCM_URL . '/css/admin.css', array(), WP_MCM_VERSION . '.2' );`

Note, in official code we should revert back to:

wp_enqueue_style( $this->plugin_slug .'-admin-styles', WP_MCM_URL . '/css/admin.css', array(), WP_MCM_VERSION );`

because this change is used just to load patched CSS.

Patch for the version 1.9.8.1 is below.

In wp-content/plugins/wp-media-category-management/css/admin.css:
Delete:

.media-frame select.attachment-filters {
    /* max-width: calc(48% - 12px) !important; */
}

Add:

.media-modal-content .media-frame select.attachment-filters {
	max-width: calc(32% - 12px);
}

Update wp-content/plugins/wp-media-category-management/include/class-wp-mcm-plugin.php from:

wp_enqueue_style( $this->plugin_slug .'-admin-styles', WP_MCM_URL . '/css/admin.css', array(), WP_MCM_VERSION . '.1');

to:

wp_enqueue_style( $this->plugin_slug .'-admin-styles', WP_MCM_URL . '/css/admin.css', array(), WP_MCM_VERSION . '.2' );

`