- updated styles for disabled icons;

- added checks for disabled/enabled buttons;
- fixed displaying the date of assignment;

src/assets/scss/components/misc.scss

@@ -12,6 +12,10 @@
 .p-button:not(.p-button-outlined, .p-button-secondary, .p-confirm-popup-reject, .p-button-link, .p-column-filter-add-button, .p-column-filter-remove-button) span {
   color: var(--menuitem-active-color);
 }
+.p-button.p-button-success.p-button-icon-only[disabled],
+.p-button.p-button-danger.p-button-icon-only[disabled] {
+  filter: unset;
+}
 .p-column-filter-remove-button {
   span {
     margin: 0 5px;