Contribution receipt has incorrect total amount, no sales tax section or amount just prior to it

From testing by Pradeep https://github.com/civicrm/civicrm-core/pull/9948#issuecomment-285710742 March 10 (probably needs re-verification):
1. Contribution Receipts
Test Case:
1. Added contribution for $100 using contribution form. Checked Contribution receipt - looks good
2. Updated contribution #1 using contribution form. Checked Contribution receipt - looks good
3. Added contribution for $100 using contribution form with Sales Tax enabled. Checked Contribution receipt - looks good
4. Updated contribution #3 using contribution form with Sales Tax enabled. Checked Contribution receipt - looks good
5. Added contribution using contribution form using priceset having Checkbox, Radio, Text and Select field. Checked Contribution receipt - looks good
6. Updated contribution #5 using contribution form. Checked Contribution receipt - looks good
7. Added contribution using contribution form using priceset having Checkbox, Radio, Text and Select field with Sales Tax enabled. Checked Contribution receipt - looks good. Attached CreateContributionReceipt.png
**8. Updated contribution #7 using contribution form with Sales Tax enabled. Checked Contribution receipt - some tax info missing. Attached UpdateContributionReceipt.png
– Total amount is shown wrong
– Sales Tax section is missing
– Amount before tax section missing
Change to code at line 1804 has caused the regression.