SimpleBLE Java can handle some of the cheap Chinese iTags successfully. However, with a very common one, a teardrop-shaped type, the subscription to an advertised service creates an exception in native code.

Here is the hardware:

Bad one (teardrop-shaped with big hole selected)
https://www.aliexpress.com/item/1005009111165326.html
Mini Dog GPS Bluetooth 5.0 Tracker Anti-Lost Device Round Anti-Lost Device Pet Kids Bag Wallet Tracking Smart Finder Locator

Good one (round black with small hole selected):
https://www.aliexpress.com/item/1005006064741110.html
Bluetooth Compatible Tracker Keys Finder Item Locator for Keys Bags Pets Anti-lost Locator Tag Alarm Reminder For IOS Android

Please see the source file and the log file of the crash.

A fatal error has been detected by the Java Runtime Environment:

I_TagButtonListener3.java

hs_err_pid11028.log

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ff9a572104a, pid=11028, tid=15760

When running this from my IDE, I noticed that the Java process became orphan and kept running in the system even after IDE shutdown.

These so-called iTags have companian applications such as "iSearching"

Closed source:
https://isearchingapp.com/
https://play.google.com/store/apps/details?id=com.mingmao.isearch
https://play.google.com/store/apps/details?id=com.lenzetech.antilost

Other:
https://play.google.com/store/apps/details?id=com.eigl.myitags

and (open source, reverse engineered):
https://github.com/sylvek/itracing2/
https://f-droid.org/en/packages/net.sylvek.itracing2/

I haven't tried all of them, but the tag's button is supported by at least one of them.

The number of available apps indicates to me that these devices are popular. I tried to use the button of the tag as a remote control device to control some function of a running program on my PC.

Please feel free to ask if you need more supporting information and material.