nb-datepicker icons missing for navigations

[maihannijat]

Issue type

I'm submitting a ... (check one with "x")

• [ x] bug report
• feature request

Issue description

Current behavior:
Next and Previous navigation icons are missing.

Expected behavior:
Next and Previous navigation icons to go to next or previous months.

Steps to reproduce:

• Use nebular 4
• Use eva-icons instead of nebular-icons
• Remove nebular-icons package and style from Angular.json

Related code:

<i _ngcontent-c43="" class="nb-arrow-left" ng-reflect-ng-class="[object Object]"></i>
<nb-calendar-navigation _ngcontent-c43="" _nghost-c45="" ng-reflect-date="Thu Apr 04 2019 09:23:13 GMT-0">
<button _ngcontent-c45="" nbbutton="" _nghost-c41="" tabindex="0"> Apr 2019 </button></nb-calendar-navigation>
<i _ngcontent-c43="" class="nb-arrow-right" ng-reflect-ng-class="[object Object]"></i>

[lebaudantoine]

I am having the same issue

[nnixaa]

fixed in 4.0