Hairline gap in Portfolio widget (when Item Gap set to "0")

[drawcard]

Prerequisites

• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• The issue still exists against the latest stable version of Elementor.

Description

For the Portfolio widget, setting Item Gap to "0" creates a hairline gap between repeater items.

(Magnified)

Steps to reproduce

• Create a portfolio widget
• Set a query that contains items with Featured Image thumbnails
• Edit Portfolio > Style > Items > Set Item Gap to 0

Isolating the problem

• This bug happens with only Elementor plugin active (and Elementor Pro).
• This bug happens with a default WordPress theme active.
• I can reproduce this bug consistently using the steps above.

Environment

http://whatsmybrowser.org/b/SQWT6JC

System Info

```

== Server Environment ==
Operating System: Linux
Software: LiteSpeed
MySQL version: 10.0.35
PHP Version: 7.1.19
PHP Max Input Vars: 1000
PHP Max Post Size: 32M
GD Installed: Yes
ZIP Installed: Yes
Write Permissions: All right
Elementor Library: Connected

== WordPress Environment ==
Version: 4.9.7
Site URL: https://drawcard.com.au
Home URL: https://drawcard.com.au
WP Multisite: No
Max Upload Size: 32 MB
Memory limit: 40M
Permalink Structure: /%category%/%postname%
Language: en-AU
Timezone: 0
Debug Mode: Active

== Theme ==
Name: Drawcard 2017
Version: 9.0.0-beta.2
Author: Roots
Child Theme: Yes

== User ==
Role: administrator
WP Profile lang: en_AU
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36

== Active Plugins ==
AdWords Conversion Tracking Code
Version: 1.0
Author: kcseopro

All-in-One WP Migration
	Version: 6.71
	Author: ServMask

dflip
	Version: 1.2.8
	Author: Deepak Ghimire

Duplicate Post
	Version: 3.2.2
	Author: Enrico Battocchi

Elementor
	Version: 2.1.2
	Author: Elementor.com

Elementor Pro
	Version: 2.1.0-beta2
	Author: Elementor.com

EWWW Image Optimizer
	Version: 4.2.3
	Author: Shane Bishop

Google Analytics Dashboard for WP (GADWP)
	Version: 5.3.5
	Author: ExactMetrics

Insert PHP Code Snippet
	Version: 1.2.5
	Author: xyzscripts.com

OnePress Image Elevator
	Version: 2.6.2
	Author: OnePress

Pods - Custom Content Types and Fields
	Version: 2.7.6
	Author: Pods Framework Team

Post Type Switcher
	Version: 3.1.0
	Author: John James Jacoby

Really Simple SSL
	Version: 3.0.2
	Author: Rogier Lankhorst

Redirection
	Version: 3.3.1
	Author: John Godley

Regenerate Thumbnails
	Version: 3.0.2
	Author: Alex Mills (Viper007Bond)

Review Wave - Google Places Reviews
	Version: 1.4.7
	Author: MessageMetric

Sunshine Photo Cart
	Version: 2.7.2
	Author: Sunshine Photo Cart

SVG Support
	Version: 2.3.15
	Author: Benbodhi

Theme Check
	Version: 20160523.1
	Author: Otto42, pross

TinyMCE Advanced
	Version: 4.7.11
	Author: Andrew Ozz

Wordfence Security
	Version: 7.1.9
	Author: Wordfence

WP-Optimize
	Version: 2.2.4
	Author: David Anderson, Ruhani Rabin, Team Updraft

Yoast SEO
	Version: 7.8
	Author: Team Yoast

== Must-Use Plugins ==
WP Sync DB Compatibility
Version: 1.0
Author: Sean Lang

== Debug ==
Errors:
TypeError: Cannot read property 'checked' of undefined
at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=2.1.2 - 2:43100
2018-07-16 01:08 +00:00

	TypeError: o.attributes[t.name].each is not a function
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=2.1.0-beta2 - 2:105550
		2018-07-02 07:04 +00:00

	TypeError: Cannot read property 'behavior' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=2.1.0-beta2 - 2:223542
		2018-07-02 04:48 +00:00

	TypeError: Cannot read property 'checked' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=2.0.12 - 2:43232
		2018-05-16 05:04 +00:00

	ViewDestroyedError: View (cid: "view1403") has already been destroyed and cannot be used.
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/lib/backbone/backbone.marionette.min.js?ver=2.4.5 - 22:19954
		2018-04-09 01:53 +00:00

	TypeError: Cannot read property 'top' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/lib/select2/js/select2.min.js?ver=4.0.5 - 1:10581
		2018-04-09 01:37 +00:00
		x 2 times

	TypeError: Cannot read property 'removeClass' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=1.7.11 - 2:104207
		2017-10-06 01:09 +00:00
		x 2 times

	TypeError: Cannot read property 'removeClass' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=1.7.5 - 2:104205
		2017-09-26 05:36 +00:00
		x 9 times

	TypeError: Cannot read property 'removeClass' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=1.6.4 - 2:111050
		2017-08-14 04:17 +00:00
		x 5 times

	TypeError: Cannot read property 'removeClass' of undefined
		at https://drawcard.com.au/wp-content/plugins/elementor/assets/js/editor.min.js?ver=1.6.0-RC3 - 2:110978
		2017-07-31 05:43 +00:00
		x 5 times

</details>

[bainternet]

@drawcard

thanks for reporting, we can replicate and it should be fixed in next version.

[drawcard]

Nice one, cheers :)