Residue Search Highlighting doesn't appear for Custom Genomes until zoom level is changed

*Noticed by Ivory on 8.3.0 (also happens on 8.4.0):

The residue search under the Advanced Search tab allows users to highlight a specific sequence of nucleotides based on a string.

When a hit is found, IGB places the results in the Advanced Search tab and it also highlights the residue on the Sequence Axis.

However, when performing this on a Custom Genome it does not work the same way. If a hit is found it places the results in the Advanced Search tab but DOES NOT highlight the residue on the Sequence Axis...

...slightly adjusting the horizontal zoom level causes the residue highlighting to suddenly appear. This should be fixed so that it appears as soon as a hit is found.