Protractor: Failed: stale element reference: element is not attached to the page document for points in map - protractor

Question

I use the following function in the protractor test. Test run causes stale element reference: element is not attached to the page document is thrown. The test is being executed for various page versions.
openPointDescription: function(){
widget.points.each(function(point){
widget.pointDescription.container.isPresent().then(function(present){
if (!present)
{
browser.actions().mouseMove(point).click().perform().then();
}
})
});
}
Where:
widget.points: element.all(by.tagWithAttributeRegex('img', 'src', '.*marker.png')),
pointDescritption.container: element(by.css('div[class=bp-point-desc]')),
Stacktrace indicates mouseMove function
[chrome #01-13] - Failed: stale element reference: element is not attached to the page document
[chrome #01-13] (Session info: headless chrome=90.0.4430.85)
[chrome #01-13] (Driver info: chromedriver=90.0.4430.24 (4c6d850f087da467d926e8eddb76550aed655991-refs/branch-heads/4430#{#429}),platform=Linux 4.4.0-187-generic x86_64)
[chrome #01-13] (Session info: headless chrome=90.0.4430.85)
[chrome #01-13] (Driver info: chromedriver=90.0.4430.24 (4c6d850f087da467d926e8eddb76550aed655991-refs/branch-heads/4430#{#429}),platform=Linux 4.4.0-187-generic x86_64)
[chrome #01-13] at Object.checkLegacyResponse (/var/app/node_modules/selenium-webdriver/lib/error.js:546:15)
[chrome #01-13] at parseHttpResponse (/var/app/node_modules/selenium-webdriver/lib/http.js:509:13)
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/http.js:441:30
[chrome #01-13] at processTicksAndRejections (internal/process/task_queues.js:97:5)
[chrome #01-13] From: Task: mouseMove
[chrome #01-13] at thenableWebDriverProxy.schedule (/var/app/node_modules/selenium-webdriver/lib/webdriver.js:807:17)
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/actions.js:124:23
[chrome #01-13] at Array.map (<anonymous>)
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/actions.js:123:29
[chrome #01-13] at TaskQueue.execute_ (/var/app/node_modules/selenium-webdriver/lib/promise.js:3084:14)
[chrome #01-13] at TaskQueue.executeNext_ (/var/app/node_modules/selenium-webdriver/lib/promise.js:3067:27)
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/promise.js:2927:27
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/promise.js:668:7
[chrome #01-13] at processTicksAndRejections (internal/process/task_queues.js:97:5)
[chrome #01-13] From: Task: ActionSequence.perform
[chrome #01-13] at ActionSequence.perform (/var/app/node_modules/selenium-webdriver/lib/actions.js:122:33)
[chrome #01-13] at /var/app/src/widget/widget.pageController.js:31:68
[chrome #01-13] at ManagedPromise.invokeCallback_ (/var/app/node_modules/selenium-webdriver/lib/promise.js:1376:14)
[chrome #01-13] at TaskQueue.execute_ (/var/app/node_modules/selenium-webdriver/lib/promise.js:3084:14)
[chrome #01-13] at TaskQueue.executeNext_ (/var/app/node_modules/selenium-webdriver/lib/promise.js:3067:27)
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/promise.js:2927:27
[chrome #01-13] at /var/app/node_modules/selenium-webdriver/lib/promise.js:668:7
[chrome #01-13] at processTicksAndRejections (internal/process/task_queues.js:97:5)
[chrome #01-13] From: Task: Run it("displays point description after clicking on a valid point") in control flow
[chrome #01-13] at UserContext.<anonymous> (/var/app/node_modules/jasminewd2/index.js:94:19)
[chrome #01-13] From asynchronous test:
[chrome #01-13] Error
[chrome #01-13] at Suite.<anonymous> (/var/app/src/widget/spec/genericSpec.js:21:13)
[chrome #01-13] at Object.generateDescribe (/var/app/src/widget/spec/genericSpec.js:8:9)
[chrome #01-13] at Object.<anonymous> (/var/app/src/widget/spec/widget5.9.spec.js:5:13)
[chrome #01-13] at Module._compile (internal/modules/cjs/loader.js:1147:30)
[chrome #01-13] at Object.Module._extensions..js (internal/modules/cjs/loader.js:1167:10)
[chrome #01-13] at Module.load (internal/modules/cjs/loader.js:996:32)
[chrome #01-13]

Answer 1

90% chance the problem is .each. Try with for loop instead. But I never worked with .then syntax, so using async/await
async openPointDescription: function() {
for(let i=0; i<await widget.points.count(); i++) {
if (!(await widget.pointDescription.container.isPresent())) { // it looks like this has to go outside of for loop
await browser.actions().mouseMove(widget.points.get(i)).perform()
await widget.points.get(i).click()
}
}