Same problem with a 2017 iMac running Mojave
2.3 GHz i5
16BG ram
250GB SSD and I'm only using a quarter of the drive
CC 2020
I have backed up the /Library/Cached folder and trashed it.
Done the same thing with my Preference folder and this issue just keeps getting worse.

Had to upgrade from High Sierra because of graphics issues and not displaying and now this.

Get it together Adobe this is ridiculous!

Same symptoms as main post. 62GB of memory being eaten up and starts crashing the computer. It's a very simple document, nothing heavy at all. Can't believe it's been more than a year without a solution.

MacBook Air (Retina, 13-inch, 2018)
Processor: 1.6 GHz Intel Core i5
Memory: 8 GB 2133 MHz LPDDR3
Mac OS Mojave: 10.14.6 (18G87)
Adobe InDesign v14.0.2

its now October 2019 and this still doesn't seem to have been resolved... I'm having the same problem. MacBook Pro, Mojave, Indesign 20129

Same. Mine also gets ridiculously hot...runs full speed fans, still sits about 130-142 degrees when editing text and no other apps open.
I can't even keep the laptop on my lap without burning myself. Apple has called me because I've sent so many bug reports from Adobe crashes/overheating. Also happening in Photoshop cc 19 and Ai. Occassionally in Animate and AE but not as often. No other App brands affecting like this...just Adobe. Please fix.
MacBook Pro 15 in ...2018
Mohave 10.14.5
touchbar
3.1 GHz Intel Core i7
16 GB 2133 MHz LPDDR3
Radeon Pro 560 4 GB
Intel HD Graphics 630 1536 MB

DELETE YOUR TEXTURED FONTS!

I did this and it hugely helped.

However, I have come into the same problem today where it’s taking up 7gb of ram! Which I think is a separate issue with InDesign.

Same problem. 2018 15-inch MacBook Pro running Mojave.

same problem win 10, I can not use indesign and illustrator because of the memory lack, but PS is working. very frustrating, I found some articles about adobe cep html engine, but all the mentioned solutions did not worked.
I tried to use the older verions of ID, but it could not help...

if sb have a good solution please write!

I'm on Windows 10. Same problem exactly. InDesign 2019 maxes out on memory even when idle and then crashes. Absolutely pathetic programming.

Same problem

Mac 10.14.5 (18F132) Mojave

iMac (Retina 5K, 27-inch, 2019)
3.6 GHz Intel Core i9
16 GB 2667 MHz DDR4
Radeon Pro 580X 8 GB

Same issue here. No project open, InDesign minimized, and over the course of 30 mins it proceeded to take up the rest of my RAM (about 7GB)

Macbook Pro 3.5GHz i7
16GB RAM
Mojave 14.4
InDesign CC 2019 (14.0.2)

I have the same problem with the memory leak.
At our site we have a proxy server with Indesign 2019 the memory usage just keeps growing after a minute of use until it is unresponsive usually using well over 100GB.
Indesign 2018 does not have the issue.
If I connect to a network that does not have a proxy Indesign 2019 works ok.
So it seems, on our site, the proxy server is blocking something that Indesign 2019 is trying to access and instead of failing gracefully it chews up all the memory it can.
This problem has occurred on High Sierra and Mojave

I found this on another forum:
https://forums.adobe.com/thread/2473850
and since deleting the update of LR and reverting to LR Ver.5 every other adobe app is behaving itself.
Worked for me!!

Same problem, InDesign 2019 seems to have a 'memory leak'. Even when it's dormant it seems to progressively take up more and more memory, until my MacBook (Mid 2012, 8MB RAM, 500GB SSD, High Sierra) runs out of RAM. Can see this happening on my Activity Monitor app.

I'm having the same issue with both InDesign and Illustrator. It's completely unbearable to work that way when you have to save after every action and rebooting the software every 5 minutes. Sure it is a problem with Adobe. Going back to the 2018 version will not work for me since all the files created with the 2019 version won't open on earlier versions of software.

What is weird for me is that the bug doesn't happen when using Photoshop, even when working with very large files. Please Adobe fix this ASAP.

I'm also having this issue, I'm in a large work environment so possibly Adobe trying to communicate with its servers but our security blocking it so memory just goes up GB by GB until it crashes usually around 10mins at 150GB. I'd love to know if this is true and what is running in the background? Can it be disabled Adobe?

The last comment was mine. I just shutdown my Suitcase Fusion 6, latency & lagged problems stopped. ID 14.0.1 is working fine. Sorry ADOBE.

Upgraded to ID 14.0.1 on Mojave 10.14.3 and it's flogging out the system memory. I'm only doing a basic DL print flyer and it's so slow that I can hardly do anything. Just resizing bounding boxes or moving text around is an issue. For the future, this is teaching me to ignore your bloody updates.

On a daily basis this is proving to be unworkable it has just taken me 2 hours to complete a 2-page fact sheet EVERY single action the program stalls. Everywhere I look online everybody appears to have the exact same issue.

Model Name: iMac
Processor Name: Intel Core i7
Processor Speed: 4 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 16 GB

I am waiting to see if this gets resolved - still working with 2018 as couldn't work like that. My memory was wiped out by Indd 2019 cc.

I'm having a similar issue, after upgrading to InD 2019. I keep seeing an alert that I've run out of application memory, and the app is paused by the OS, even though I have quit all other heavy apps and my InD project is a single, half-page.

MacBook Pro (15-inch, Late 2016)
2.7 GHz Intel Core i7
16 GB 2133 MHz LPDDR3
Sierra 10.12.6